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/Problem02_label10_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:23:20,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:23:20,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:23:20,190 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:23:20,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:23:20,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:23:20,193 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:23:20,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:23:20,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:23:20,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:23:20,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:23:20,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:23:20,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:23:20,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:23:20,213 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:23:20,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:23:20,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:23:20,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:23:20,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:23:20,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:23:20,224 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:23:20,225 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:23:20,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:23:20,236 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 19:23:20,252 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:23:20,252 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:23:20,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:23:20,253 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:23:20,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:23:20,254 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:23:20,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:23:20,254 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:23:20,254 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:23:20,254 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:23:20,255 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:23:20,255 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:23:20,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:23:20,256 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:23:20,256 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:23:20,256 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:23:20,256 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:23:20,256 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:23:20,257 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:23:20,257 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:23:20,257 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:23:20,257 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:23:20,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:23:20,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:23:20,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:23:20,258 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:23:20,259 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:23:20,260 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:23:20,260 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:23:20,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:23:20,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:23:20,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:23:20,352 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:23:20,353 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:23:20,354 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10_true-unreach-call_false-termination.c [2018-10-24 19:23:20,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0beac1ca/9fc0791b0ca8429bad6500135ed59421/FLAG1416c1157 [2018-10-24 19:23:21,037 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:23:21,041 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label10_true-unreach-call_false-termination.c [2018-10-24 19:23:21,068 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0beac1ca/9fc0791b0ca8429bad6500135ed59421/FLAG1416c1157 [2018-10-24 19:23:21,097 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0beac1ca/9fc0791b0ca8429bad6500135ed59421 [2018-10-24 19:23:21,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:23:21,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:23:21,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:23:21,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:23:21,121 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:23:21,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:21,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c957616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21, skipping insertion in model container [2018-10-24 19:23:21,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:21,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:23:21,206 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:23:21,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:23:21,714 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:23:21,874 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:23:21,896 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:23:21,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21 WrapperNode [2018-10-24 19:23:21,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:23:21,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:23:21,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:23:21,900 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:23:21,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:21,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:23:22,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:23:22,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:23:22,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:23:22,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (1/1) ... [2018-10-24 19:23:22,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:23:22,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:23:22,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:23:22,233 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:23:22,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (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 19:23:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:23:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:23:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:23:22,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:23:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:23:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:23:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:23:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:23:25,868 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:23:25,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:25 BoogieIcfgContainer [2018-10-24 19:23:25,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:23:25,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:23:25,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:23:25,884 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:23:25,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:23:21" (1/3) ... [2018-10-24 19:23:25,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6878c550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:25, skipping insertion in model container [2018-10-24 19:23:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:21" (2/3) ... [2018-10-24 19:23:25,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6878c550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:25, skipping insertion in model container [2018-10-24 19:23:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:25" (3/3) ... [2018-10-24 19:23:25,889 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label10_true-unreach-call_false-termination.c [2018-10-24 19:23:25,901 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:23:25,914 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:23:25,930 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:23:25,970 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:23:25,970 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:23:25,970 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:23:25,971 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:23:25,971 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:23:25,971 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:23:25,971 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:23:25,971 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:23:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:23:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 19:23:26,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:26,029 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:26,032 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:26,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash -773755248, now seen corresponding path program 1 times [2018-10-24 19:23:26,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:26,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:26,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:26,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:26,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:26,957 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 19:23:26,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:23:26,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:23:26,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:23:26,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:23:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:23:26,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:23:26,988 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-24 19:23:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:29,424 INFO L93 Difference]: Finished difference Result 774 states and 1357 transitions. [2018-10-24 19:23:29,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:23:29,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-24 19:23:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:29,452 INFO L225 Difference]: With dead ends: 774 [2018-10-24 19:23:29,452 INFO L226 Difference]: Without dead ends: 531 [2018-10-24 19:23:29,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 19:23:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-24 19:23:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 529. [2018-10-24 19:23:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-10-24 19:23:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 922 transitions. [2018-10-24 19:23:29,556 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 922 transitions. Word has length 142 [2018-10-24 19:23:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:29,557 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 922 transitions. [2018-10-24 19:23:29,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:23:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 922 transitions. [2018-10-24 19:23:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 19:23:29,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:29,569 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:23:29,570 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:29,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash -309014567, now seen corresponding path program 1 times [2018-10-24 19:23:29,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:29,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:29,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:29,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:23:29,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:23:29,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:23:29,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:23:29,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:23:29,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:23:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:23:29,828 INFO L87 Difference]: Start difference. First operand 529 states and 922 transitions. Second operand 6 states. [2018-10-24 19:23:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:32,052 INFO L93 Difference]: Finished difference Result 1284 states and 2274 transitions. [2018-10-24 19:23:32,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:23:32,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 19:23:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:32,070 INFO L225 Difference]: With dead ends: 1284 [2018-10-24 19:23:32,070 INFO L226 Difference]: Without dead ends: 761 [2018-10-24 19:23:32,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:23:32,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2018-10-24 19:23:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 742. [2018-10-24 19:23:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2018-10-24 19:23:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1199 transitions. [2018-10-24 19:23:32,140 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1199 transitions. Word has length 164 [2018-10-24 19:23:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:32,141 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1199 transitions. [2018-10-24 19:23:32,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:23:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1199 transitions. [2018-10-24 19:23:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 19:23:32,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:32,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:32,148 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:32,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1423050670, now seen corresponding path program 1 times [2018-10-24 19:23:32,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:32,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:32,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:32,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:32,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:23:32,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:23:32,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:23:32,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:23:32,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:23:32,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:23:32,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:23:32,678 INFO L87 Difference]: Start difference. First operand 742 states and 1199 transitions. Second operand 5 states. [2018-10-24 19:23:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:34,870 INFO L93 Difference]: Finished difference Result 1625 states and 2665 transitions. [2018-10-24 19:23:34,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:23:34,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-24 19:23:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:34,882 INFO L225 Difference]: With dead ends: 1625 [2018-10-24 19:23:34,882 INFO L226 Difference]: Without dead ends: 741 [2018-10-24 19:23:34,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:23:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-24 19:23:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2018-10-24 19:23:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-10-24 19:23:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1181 transitions. [2018-10-24 19:23:34,917 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1181 transitions. Word has length 169 [2018-10-24 19:23:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:34,917 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1181 transitions. [2018-10-24 19:23:34,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:23:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1181 transitions. [2018-10-24 19:23:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 19:23:34,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:34,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:23:34,923 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:34,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:34,924 INFO L82 PathProgramCache]: Analyzing trace with hash 192175635, now seen corresponding path program 1 times [2018-10-24 19:23:34,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:34,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:34,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:34,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:34,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:23:35,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:23:35,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:23:35,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:23:35,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:23:35,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:23:35,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:23:35,157 INFO L87 Difference]: Start difference. First operand 741 states and 1181 transitions. Second operand 6 states. [2018-10-24 19:23:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:36,828 INFO L93 Difference]: Finished difference Result 2329 states and 3898 transitions. [2018-10-24 19:23:36,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:23:36,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-10-24 19:23:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:36,843 INFO L225 Difference]: With dead ends: 2329 [2018-10-24 19:23:36,844 INFO L226 Difference]: Without dead ends: 1594 [2018-10-24 19:23:36,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:23:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2018-10-24 19:23:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1552. [2018-10-24 19:23:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2018-10-24 19:23:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2380 transitions. [2018-10-24 19:23:36,912 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2380 transitions. Word has length 197 [2018-10-24 19:23:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:36,913 INFO L481 AbstractCegarLoop]: Abstraction has 1552 states and 2380 transitions. [2018-10-24 19:23:36,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:23:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2380 transitions. [2018-10-24 19:23:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 19:23:36,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:36,924 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:23:36,924 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:36,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash 36195093, now seen corresponding path program 1 times [2018-10-24 19:23:36,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:36,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:36,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:36,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:36,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:37,264 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:23:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 19:23:37,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:23:37,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:23:37,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-24 19:23:37,543 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [202], [207], [209], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [807], [809], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:23:37,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:23:37,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:23:54,618 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:23:54,620 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:23:54,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:54,634 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:24:00,508 INFO L232 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 81.51% of their original sizes. [2018-10-24 19:24:00,509 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:24:04,087 INFO L413 sIntCurrentIteration]: We have 196 unified AI predicates [2018-10-24 19:24:04,087 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:24:04,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:24:04,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-24 19:24:04,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:24:04,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:24:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:24:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:24:04,091 INFO L87 Difference]: Start difference. First operand 1552 states and 2380 transitions. Second operand 14 states. [2018-10-24 19:25:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:54,702 INFO L93 Difference]: Finished difference Result 3398 states and 5219 transitions. [2018-10-24 19:25:54,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:25:54,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 197 [2018-10-24 19:25:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:54,713 INFO L225 Difference]: With dead ends: 3398 [2018-10-24 19:25:54,713 INFO L226 Difference]: Without dead ends: 1852 [2018-10-24 19:25:54,719 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 209 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:25:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-10-24 19:25:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1699. [2018-10-24 19:25:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2018-10-24 19:25:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2539 transitions. [2018-10-24 19:25:54,839 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2539 transitions. Word has length 197 [2018-10-24 19:25:54,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:54,839 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2539 transitions. [2018-10-24 19:25:54,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:25:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2539 transitions. [2018-10-24 19:25:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 19:25:54,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:54,848 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:54,848 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:54,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash 981314004, now seen corresponding path program 1 times [2018-10-24 19:25:54,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:54,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:54,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:54,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:54,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:55,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:25:55,075 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:25:55,075 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-10-24 19:25:55,076 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [202], [207], [209], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [807], [809], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:25:55,083 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:25:55,083 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:26:28,500 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:26:28,501 INFO L272 AbstractInterpreter]: Visited 146 different actions 286 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 19:26:28,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:28,506 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:26:34,871 INFO L232 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 82.02% of their original sizes. [2018-10-24 19:26:34,871 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:27:35,698 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:27:35,702 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:27:35,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:27:35 BoogieIcfgContainer [2018-10-24 19:27:35,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:27:35,704 INFO L168 Benchmark]: Toolchain (without parser) took 254590.90 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 2.1 GB in the end (delta: -726.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 19:27:35,705 INFO L168 Benchmark]: CDTParser took 0.28 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 19:27:35,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.11 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:27:35,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:27:35,708 INFO L168 Benchmark]: Boogie Preprocessor took 83.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:27:35,709 INFO L168 Benchmark]: RCFGBuilder took 3637.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:27:35,709 INFO L168 Benchmark]: TraceAbstraction took 249832.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -51.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 19:27:35,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 781.11 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3637.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249832.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -51.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 577]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 577). Cancelled while BasicCegarLoop was analyzing trace of length 208 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 249.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 119.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 715 SDtfs, 3551 SDslu, 928 SDs, 0 SdLazy, 3979 SolverSat, 1076 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 244 GetRequests, 195 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1699occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 50.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960581162466471 AbsIntWeakeningRatio, 0.15422885572139303 AbsIntAvgWeakeningVarsNumRemoved, 761.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 216 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 869 NumberOfCodeBlocks, 869 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 755641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 95/141 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown