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/Problem18_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:01:24,908 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:01:24,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:01:24,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:01:24,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:01:24,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:01:24,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:01:24,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:01:24,933 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:01:24,934 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:01:24,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:01:24,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:01:24,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:01:24,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:01:24,943 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:01:24,947 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:01:24,948 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:01:24,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:01:24,957 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:01:24,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:01:24,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:01:24,963 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:01:24,968 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:01:24,983 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 [2018-10-24 19:01:24,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:01:24,998 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:01:25,001 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:01:25,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:01:25,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:01:25,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:01:25,002 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:01:25,002 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:01:25,005 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:01:25,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:01:25,006 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:01:25,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:01:25,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:01:25,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:01:25,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:01:25,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:01:25,009 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:01:25,009 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:01:25,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:01:25,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:01:25,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:01:25,010 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:01:25,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:01:25,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:01:25,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:01:25,011 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:01:25,011 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:01:25,011 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:01:25,011 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:01:25,012 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:01:25,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:01:25,012 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:01:25,012 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:01:25,012 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:01:25,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:01:25,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:01:25,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:01:25,087 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:01:25,088 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:01:25,089 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-24 19:01:25,157 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/465621836/ac25e5933b7c44b097c6b0dfce5b3499/FLAG98e244eac [2018-10-24 19:01:25,929 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:01:25,930 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-24 19:01:25,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/465621836/ac25e5933b7c44b097c6b0dfce5b3499/FLAG98e244eac [2018-10-24 19:01:25,972 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/465621836/ac25e5933b7c44b097c6b0dfce5b3499 [2018-10-24 19:01:25,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:01:25,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:01:25,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:01:25,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:01:25,992 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:01:25,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:01:25" (1/1) ... [2018-10-24 19:01:25,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a802b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:25, skipping insertion in model container [2018-10-24 19:01:25,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:01:25" (1/1) ... [2018-10-24 19:01:26,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:01:26,168 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:01:27,195 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:01:27,202 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:01:27,670 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:01:27,705 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:01:27,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27 WrapperNode [2018-10-24 19:01:27,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:01:27,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:01:27,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:01:27,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:01:27,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:27,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:01:28,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:01:28,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:01:28,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:01:28,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (1/1) ... [2018-10-24 19:01:28,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:01:28,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:01:28,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:01:28,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:01:28,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (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 [2018-10-24 19:01:28,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:01:28,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:01:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:01:28,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:01:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:01:28,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:01:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:01:28,447 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:01:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:01:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:01:28,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:01:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:01:38,215 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:01:38,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:01:38 BoogieIcfgContainer [2018-10-24 19:01:38,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:01:38,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:01:38,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:01:38,222 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:01:38,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:01:25" (1/3) ... [2018-10-24 19:01:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636c8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:01:38, skipping insertion in model container [2018-10-24 19:01:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:01:27" (2/3) ... [2018-10-24 19:01:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636c8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:01:38, skipping insertion in model container [2018-10-24 19:01:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:01:38" (3/3) ... [2018-10-24 19:01:38,226 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-10-24 19:01:38,238 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:01:38,249 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:01:38,269 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:01:38,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:01:38,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:01:38,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:01:38,329 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:01:38,330 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:01:38,330 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:01:38,330 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:01:38,330 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:01:38,390 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 19:01:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 19:01:38,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:38,399 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] [2018-10-24 19:01:38,402 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:38,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:38,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1098805956, now seen corresponding path program 1 times [2018-10-24 19:01:38,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:38,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:38,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:38,850 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:01:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:38,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:38,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:01:38,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:38,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:01:38,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:01:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:01:38,976 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 19:01:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:46,825 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 19:01:46,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:01:46,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-24 19:01:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:46,873 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 19:01:46,874 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 19:01:46,890 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 [2018-10-24 19:01:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 19:01:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 19:01:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 19:01:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-10-24 19:01:47,094 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 20 [2018-10-24 19:01:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:47,095 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-10-24 19:01:47,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:01:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-10-24 19:01:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 19:01:47,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:47,105 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:01:47,105 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:47,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash -249505270, now seen corresponding path program 1 times [2018-10-24 19:01:47,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:47,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:47,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:47,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:47,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:47,502 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:01:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:47,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:47,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:01:47,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:47,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:01:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:01:47,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:01:47,573 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-10-24 19:01:56,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:56,256 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-10-24 19:01:56,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:56,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-24 19:01:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:56,277 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 19:01:56,277 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 19:01:56,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:01:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 19:01:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-24 19:01:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-24 19:01:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-10-24 19:01:56,372 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 90 [2018-10-24 19:01:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:56,373 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-10-24 19:01:56,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:01:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-10-24 19:01:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 19:01:56,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:56,376 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:01:56,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:56,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938777, now seen corresponding path program 1 times [2018-10-24 19:01:56,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:56,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:56,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:56,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:56,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:56,714 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:01:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:56,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:56,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:01:56,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:56,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:01:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:01:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:01:56,846 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-10-24 19:02:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:02:03,234 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-10-24 19:02:03,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:02:03,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-24 19:02:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:02:03,268 INFO L225 Difference]: With dead ends: 7345 [2018-10-24 19:02:03,268 INFO L226 Difference]: Without dead ends: 4426 [2018-10-24 19:02:03,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:02:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-10-24 19:02:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-10-24 19:02:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-10-24 19:02:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-10-24 19:02:03,396 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 91 [2018-10-24 19:02:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:02:03,397 INFO L481 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-10-24 19:02:03,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:02:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-10-24 19:02:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 19:02:03,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:02:03,400 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:02:03,401 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:02:03,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:03,401 INFO L82 PathProgramCache]: Analyzing trace with hash 677319619, now seen corresponding path program 1 times [2018-10-24 19:02:03,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:02:03,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:03,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:02:03,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:03,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:02:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:02:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:02:03,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:02:03,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:02:03,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:02:03,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:02:03,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:02:03,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:02:03,523 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-10-24 19:02:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:02:14,274 INFO L93 Difference]: Finished difference Result 14820 states and 21982 transitions. [2018-10-24 19:02:14,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:02:14,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-10-24 19:02:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:02:14,334 INFO L225 Difference]: With dead ends: 14820 [2018-10-24 19:02:14,334 INFO L226 Difference]: Without dead ends: 10435 [2018-10-24 19:02:14,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:02:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2018-10-24 19:02:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10283. [2018-10-24 19:02:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10283 states. [2018-10-24 19:02:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 13623 transitions. [2018-10-24 19:02:14,670 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 13623 transitions. Word has length 93 [2018-10-24 19:02:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:02:14,670 INFO L481 AbstractCegarLoop]: Abstraction has 10283 states and 13623 transitions. [2018-10-24 19:02:14,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:02:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 13623 transitions. [2018-10-24 19:02:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 19:02:14,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:02:14,677 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:02:14,677 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:02:14,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash 293997458, now seen corresponding path program 1 times [2018-10-24 19:02:14,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:02:14,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:14,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:02:14,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:14,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:02:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:02:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:02:14,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:02:14,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:02:14,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:02:14,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:02:14,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:02:14,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:02:14,927 INFO L87 Difference]: Start difference. First operand 10283 states and 13623 transitions. Second operand 4 states. [2018-10-24 19:02:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:02:23,502 INFO L93 Difference]: Finished difference Result 38974 states and 53306 transitions. [2018-10-24 19:02:23,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:02:23,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 19:02:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:02:23,625 INFO L225 Difference]: With dead ends: 38974 [2018-10-24 19:02:23,625 INFO L226 Difference]: Without dead ends: 28697 [2018-10-24 19:02:23,683 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 [2018-10-24 19:02:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28697 states. [2018-10-24 19:02:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28697 to 28687. [2018-10-24 19:02:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28687 states. [2018-10-24 19:02:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28687 states to 28687 states and 36069 transitions. [2018-10-24 19:02:24,288 INFO L78 Accepts]: Start accepts. Automaton has 28687 states and 36069 transitions. Word has length 118 [2018-10-24 19:02:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:02:24,289 INFO L481 AbstractCegarLoop]: Abstraction has 28687 states and 36069 transitions. [2018-10-24 19:02:24,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:02:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28687 states and 36069 transitions. [2018-10-24 19:02:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-24 19:02:24,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:02:24,315 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:02:24,315 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:02:24,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:24,316 INFO L82 PathProgramCache]: Analyzing trace with hash -962650317, now seen corresponding path program 1 times [2018-10-24 19:02:24,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:02:24,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:24,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:02:24,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:02:24,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:02:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:02:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 114 proven. 71 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 19:02:24,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:02:24,720 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:02:24,721 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-10-24 19:02:24,723 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2380], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:02:24,805 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:02:24,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:02:28,299 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:02:28,301 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 19:02:28,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:02:28,342 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:02:31,309 INFO L232 lantSequenceWeakener]: Weakened 324 states. On average, predicates are now at 77.38% of their original sizes. [2018-10-24 19:02:31,311 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:02:31,811 INFO L413 sIntCurrentIteration]: We have 334 unified AI predicates [2018-10-24 19:02:31,811 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:02:31,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:02:31,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 19:02:31,813 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:02:31,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:02:31,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:02:31,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:02:31,814 INFO L87 Difference]: Start difference. First operand 28687 states and 36069 transitions. Second operand 7 states. [2018-10-24 19:02:40,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 19:04:41,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:04:41,537 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:04:41,545 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:04:41,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:04:41 BoogieIcfgContainer [2018-10-24 19:04:41,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:04:41,546 INFO L168 Benchmark]: Toolchain (without parser) took 195561.09 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 906.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,548 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 19:04:41,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1718.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 433.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,550 INFO L168 Benchmark]: Boogie Preprocessor took 233.77 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,551 INFO L168 Benchmark]: RCFGBuilder took 9842.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 506.1 MB). Peak memory consumption was 506.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,552 INFO L168 Benchmark]: TraceAbstraction took 183327.73 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 425.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:41,557 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1718.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 433.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 233.77 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9842.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 506.1 MB). Peak memory consumption was 506.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183327.73 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 425.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (28687states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (56548 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 183.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 172.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1463 SDtfs, 11881 SDslu, 862 SDs, 0 SdLazy, 22269 SolverSat, 6547 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 106.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28687occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9964690184847694 AbsIntWeakeningRatio, 0.09580838323353294 AbsIntAvgWeakeningVarsNumRemoved, 894.7604790419161 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 223 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 747 NumberOfCodeBlocks, 747 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 246551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 271/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown