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/Problem13_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:23:21,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:23:21,320 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:23:21,335 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:23:21,336 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:23:21,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:23:21,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:23:21,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:23:21,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:23:21,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:23:21,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:23:21,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:23:21,350 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:23:21,351 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:23:21,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:23:21,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:23:21,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:23:21,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:23:21,367 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:23:21,369 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:23:21,370 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:23:21,371 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:23:21,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:23:21,378 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:23:21,378 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:23:21,379 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:23:21,380 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:23:21,380 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 01:23:21,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:23:21,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:23:21,396 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:23:21,396 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:23:21,396 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:23:21,397 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:23:21,400 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:23:21,400 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:23:21,400 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:23:21,400 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:23:21,401 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:23:21,401 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:23:21,402 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:23:21,402 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:23:21,402 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:23:21,402 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:23:21,402 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:23:21,403 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:23:21,403 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:23:21,403 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:23:21,403 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:23:21,403 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:23:21,403 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:23:21,404 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:23:21,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:23:21,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:23:21,404 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:23:21,404 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:23:21,405 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:23:21,405 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:23:21,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:23:21,405 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:23:21,405 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:23:21,406 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:23:21,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:23:21,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:23:21,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:23:21,479 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:23:21,480 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:23:21,480 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 01:23:21,541 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f05e799c6/dec72e1284ec4025bbe76828140c7a20/FLAG8d7eb1413 [2018-10-24 01:23:22,351 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:23:22,352 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 01:23:22,395 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f05e799c6/dec72e1284ec4025bbe76828140c7a20/FLAG8d7eb1413 [2018-10-24 01:23:22,412 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f05e799c6/dec72e1284ec4025bbe76828140c7a20 [2018-10-24 01:23:22,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:23:22,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:23:22,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:22,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:23:22,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:23:22,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:22" (1/1) ... [2018-10-24 01:23:22,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:22, skipping insertion in model container [2018-10-24 01:23:22,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:22" (1/1) ... [2018-10-24 01:23:22,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:23:22,625 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:23:24,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:24,042 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:23:24,819 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:24,855 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:23:24,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24 WrapperNode [2018-10-24 01:23:24,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:24,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:24,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:23:24,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:23:24,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:24,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:25,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:23:25,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:23:25,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:23:25,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (1/1) ... [2018-10-24 01:23:25,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:23:25,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:23:25,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:23:25,819 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:23:25,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (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 01:23:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:23:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:23:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:23:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:23:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:23:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:23:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:23:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:23:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:23:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:23:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:23:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:23:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:23:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:23:36,428 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:23:36,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:36 BoogieIcfgContainer [2018-10-24 01:23:36,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:23:36,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:23:36,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:23:36,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:23:36,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:22" (1/3) ... [2018-10-24 01:23:36,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aa6bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:36, skipping insertion in model container [2018-10-24 01:23:36,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:24" (2/3) ... [2018-10-24 01:23:36,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aa6bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:36, skipping insertion in model container [2018-10-24 01:23:36,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:36" (3/3) ... [2018-10-24 01:23:36,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label08_true-unreach-call.c [2018-10-24 01:23:36,447 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:23:36,457 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:23:36,475 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:23:36,520 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:23:36,520 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:23:36,520 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:23:36,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:23:36,521 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:23:36,521 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:23:36,521 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:23:36,521 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:23:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:23:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 01:23:36,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:36,576 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] [2018-10-24 01:23:36,578 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:36,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:36,585 INFO L82 PathProgramCache]: Analyzing trace with hash 332151899, now seen corresponding path program 1 times [2018-10-24 01:23:36,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:36,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:36,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:36,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:37,067 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:23:37,161 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 01:23:37,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:37,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:23:37,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:37,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:23:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:23:37,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:23:37,191 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:23:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:46,224 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 01:23:46,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:23:46,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-24 01:23:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:46,259 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 01:23:46,260 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 01:23:46,271 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 01:23:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 01:23:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 01:23:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 01:23:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 01:23:46,433 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 57 [2018-10-24 01:23:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:46,434 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 01:23:46,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:23:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 01:23:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 01:23:46,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:46,443 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] [2018-10-24 01:23:46,443 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:46,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1140174250, now seen corresponding path program 1 times [2018-10-24 01:23:46,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:46,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:46,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:46,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:46,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:46,739 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 01:23:46,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:46,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:23:46,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:46,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:23:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:23:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:23:46,742 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 01:24:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:10,527 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 01:24:10,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:24:10,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-24 01:24:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:10,561 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 01:24:10,562 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 01:24:10,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:24:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 01:24:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 01:24:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 01:24:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 01:24:10,676 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 133 [2018-10-24 01:24:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:10,677 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 01:24:10,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:24:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 01:24:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 01:24:10,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:10,682 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] [2018-10-24 01:24:10,682 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:10,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash -508893690, now seen corresponding path program 1 times [2018-10-24 01:24:10,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:10,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:10,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:10,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:10,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:10,888 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 01:24:10,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:10,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:24:10,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:10,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:24:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:24:10,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:24:10,890 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 01:24:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:35,240 INFO L93 Difference]: Finished difference Result 13667 states and 21761 transitions. [2018-10-24 01:24:35,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:24:35,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-24 01:24:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:35,310 INFO L225 Difference]: With dead ends: 13667 [2018-10-24 01:24:35,311 INFO L226 Difference]: Without dead ends: 9987 [2018-10-24 01:24:35,337 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 01:24:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2018-10-24 01:24:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9795. [2018-10-24 01:24:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-24 01:24:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14500 transitions. [2018-10-24 01:24:35,680 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14500 transitions. Word has length 147 [2018-10-24 01:24:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:35,681 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14500 transitions. [2018-10-24 01:24:35,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:24:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14500 transitions. [2018-10-24 01:24:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 01:24:35,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:35,687 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] [2018-10-24 01:24:35,687 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:35,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1684270358, now seen corresponding path program 1 times [2018-10-24 01:24:35,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:35,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:35,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:35,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:35,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:35,986 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 01:24:35,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:35,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:35,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:35,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:35,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:35,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:35,988 INFO L87 Difference]: Start difference. First operand 9795 states and 14500 transitions. Second operand 6 states. [2018-10-24 01:24:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:51,964 INFO L93 Difference]: Finished difference Result 34191 states and 53803 transitions. [2018-10-24 01:24:51,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:51,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-24 01:24:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:52,124 INFO L225 Difference]: With dead ends: 34191 [2018-10-24 01:24:52,124 INFO L226 Difference]: Without dead ends: 24402 [2018-10-24 01:24:52,203 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 01:24:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-10-24 01:24:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24169. [2018-10-24 01:24:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24169 states. [2018-10-24 01:24:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24169 states to 24169 states and 34071 transitions. [2018-10-24 01:24:52,927 INFO L78 Accepts]: Start accepts. Automaton has 24169 states and 34071 transitions. Word has length 165 [2018-10-24 01:24:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:52,927 INFO L481 AbstractCegarLoop]: Abstraction has 24169 states and 34071 transitions. [2018-10-24 01:24:52,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:24:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 24169 states and 34071 transitions. [2018-10-24 01:24:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 01:24:52,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:52,942 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:24:52,946 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:52,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash -784675644, now seen corresponding path program 1 times [2018-10-24 01:24:52,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:52,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:52,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:52,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:52,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:53,276 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:24:53,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:24:53,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:24:53,685 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 01:24:53,691 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2983], [2985], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3273], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:24:53,802 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:24:53,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:24:59,908 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:24:59,910 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:24:59,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:59,926 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:25:04,764 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 71.83% of their original sizes. [2018-10-24 01:25:04,765 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:25:06,421 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:25:06,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:25:06,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 01:25:06,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:06,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:25:06,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:25:06,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:25:06,424 INFO L87 Difference]: Start difference. First operand 24169 states and 34071 transitions. Second operand 11 states. [2018-10-24 01:25:40,788 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:27:02,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:27:02,444 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:27:02,450 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:27:02,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:27:02 BoogieIcfgContainer [2018-10-24 01:27:02,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:27:02,452 INFO L168 Benchmark]: Toolchain (without parser) took 220025.34 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 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 957.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,453 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:27:02,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2427.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 599.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 817.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,456 INFO L168 Benchmark]: Boogie Preprocessor took 362.16 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,457 INFO L168 Benchmark]: RCFGBuilder took 10610.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.6 MB). Peak memory consumption was 660.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,458 INFO L168 Benchmark]: TraceAbstraction took 206020.58 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: -971.2 MB). Peak memory consumption was 727.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:02,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2427.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 599.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 817.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 362.16 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10610.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 33.6 MB). Peak memory consumption was 660.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206020.58 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: -971.2 MB). Peak memory consumption was 727.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (24169states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5180 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 189.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2254 SDtfs, 13369 SDslu, 2193 SDs, 0 SdLazy, 25204 SolverSat, 5773 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 146.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 273 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24169occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960625814863102 AbsIntWeakeningRatio, 0.11864406779661017 AbsIntAvgWeakeningVarsNumRemoved, 30.610169491525422 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 508 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 346000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 255/325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown