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/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:12:32,245 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:12:32,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:12:32,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:12:32,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:12:32,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:12:32,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:12:32,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:12:32,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:12:32,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:12:32,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:12:32,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:12:32,268 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:12:32,269 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:12:32,270 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:12:32,271 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:12:32,272 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:12:32,277 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:12:32,279 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:12:32,281 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:12:32,284 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:12:32,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:12:32,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:12:32,304 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 22:12:32,335 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:12:32,335 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:12:32,336 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:12:32,336 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:12:32,336 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:12:32,337 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:12:32,338 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:12:32,338 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:12:32,338 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:12:32,338 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:12:32,338 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:12:32,339 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:12:32,339 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:12:32,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:12:32,341 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:12:32,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:12:32,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:12:32,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:12:32,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:12:32,342 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:12:32,343 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:12:32,343 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:12:32,344 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:12:32,344 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:12:32,344 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:12:32,344 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:12:32,344 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:12:32,345 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:12:32,346 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:12:32,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:12:32,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:12:32,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:12:32,421 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:12:32,421 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:12:32,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-24 22:12:32,483 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f89c650a2/50d77f44c51a4853b2ea6f9b91247136/FLAG7d720bcca [2018-10-24 22:12:33,216 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:12:33,217 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-24 22:12:33,244 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f89c650a2/50d77f44c51a4853b2ea6f9b91247136/FLAG7d720bcca [2018-10-24 22:12:33,265 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f89c650a2/50d77f44c51a4853b2ea6f9b91247136 [2018-10-24 22:12:33,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:12:33,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:12:33,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:12:33,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:12:33,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:12:33,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:33" (1/1) ... [2018-10-24 22:12:33,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6895558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:33, skipping insertion in model container [2018-10-24 22:12:33,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:33" (1/1) ... [2018-10-24 22:12:33,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:12:33,436 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:12:34,521 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:12:34,525 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:12:34,976 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:12:35,002 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:12:35,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35 WrapperNode [2018-10-24 22:12:35,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:12:35,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:12:35,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:12:35,004 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:12:35,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:12:35,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:12:35,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:12:35,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:12:35,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (1/1) ... [2018-10-24 22:12:35,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:12:35,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:12:35,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:12:35,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:12:35,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (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 22:12:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:12:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:12:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:12:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:12:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:12:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:12:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:12:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:12:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:12:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:12:48,793 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:12:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:48 BoogieIcfgContainer [2018-10-24 22:12:48,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:12:48,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:12:48,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:12:48,803 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:12:48,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:12:33" (1/3) ... [2018-10-24 22:12:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8f8b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:48, skipping insertion in model container [2018-10-24 22:12:48,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:35" (2/3) ... [2018-10-24 22:12:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8f8b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:48, skipping insertion in model container [2018-10-24 22:12:48,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:48" (3/3) ... [2018-10-24 22:12:48,808 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-10-24 22:12:48,819 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:12:48,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:12:48,855 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:12:48,916 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:12:48,916 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:12:48,916 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:12:48,916 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:12:48,916 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:12:48,917 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:12:48,917 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:12:48,917 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:12:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:12:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 22:12:48,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:48,993 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 22:12:48,995 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:49,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:49,004 INFO L82 PathProgramCache]: Analyzing trace with hash 363269502, now seen corresponding path program 1 times [2018-10-24 22:12:49,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:49,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:49,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:49,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:49,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:49,630 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 22:12:49,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:49,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:12:49,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:49,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:12:49,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:12:49,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:49,661 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:12:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:59,411 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 22:12:59,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:12:59,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-24 22:12:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:59,467 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 22:12:59,467 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 22:12:59,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 22:12:59,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 22:12:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 22:12:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 22:12:59,666 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 57 [2018-10-24 22:12:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:59,667 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 22:12:59,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:12:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 22:12:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 22:12:59,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:59,683 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 22:12:59,683 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:59,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash 448805847, now seen corresponding path program 1 times [2018-10-24 22:12:59,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:59,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:59,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:59,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:59,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:00,031 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 22:13:00,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:00,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:13:00,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:00,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:13:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:13:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:13:00,034 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 22:13:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:08,698 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 22:13:08,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:13:08,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-24 22:13:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:08,714 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 22:13:08,714 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 22:13:08,719 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 22:13:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 22:13:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 22:13:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 22:13:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 22:13:08,790 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 133 [2018-10-24 22:13:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:08,790 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 22:13:08,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 22:13:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 22:13:08,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:08,795 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] [2018-10-24 22:13:08,795 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:08,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1245309791, now seen corresponding path program 1 times [2018-10-24 22:13:08,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:08,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:08,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:08,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:08,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:09,035 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:13:09,075 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 22:13:09,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:09,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:13:09,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:09,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:13:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:13:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:13:09,078 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 22:13:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:15,664 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-24 22:13:15,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:13:15,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-24 22:13:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:15,683 INFO L225 Difference]: With dead ends: 4880 [2018-10-24 22:13:15,683 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 22:13:15,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:13:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 22:13:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-24 22:13:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:13:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-24 22:13:15,790 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 137 [2018-10-24 22:13:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:15,790 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-24 22:13:15,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-24 22:13:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 22:13:15,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:15,794 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] [2018-10-24 22:13:15,795 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:15,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1452513378, now seen corresponding path program 1 times [2018-10-24 22:13:15,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:15,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:15,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:15,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:15,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:16,055 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 22:13:16,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:16,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:13:16,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:16,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:13:16,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:13:16,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:13:16,057 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-24 22:13:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:22,596 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-24 22:13:22,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:13:22,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-24 22:13:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:22,615 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 22:13:22,616 INFO L226 Difference]: Without dead ends: 2880 [2018-10-24 22:13:22,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:13:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-24 22:13:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-24 22:13:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:13:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-24 22:13:22,709 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 167 [2018-10-24 22:13:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:22,710 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-24 22:13:22,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:13:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-24 22:13:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 22:13:22,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:22,718 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, 2, 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 22:13:22,719 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:22,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:22,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1272782136, now seen corresponding path program 1 times [2018-10-24 22:13:22,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:22,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:22,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:22,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:22,722 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 22:13:22,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:22,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:13:22,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:22,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:13:22,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:13:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:13:22,990 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 3 states. [2018-10-24 22:13:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:28,459 INFO L93 Difference]: Finished difference Result 8399 states and 11033 transitions. [2018-10-24 22:13:28,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:13:28,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-10-24 22:13:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:28,484 INFO L225 Difference]: With dead ends: 8399 [2018-10-24 22:13:28,485 INFO L226 Difference]: Without dead ends: 5525 [2018-10-24 22:13:28,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:13:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2018-10-24 22:13:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5525. [2018-10-24 22:13:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2018-10-24 22:13:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6667 transitions. [2018-10-24 22:13:28,610 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6667 transitions. Word has length 221 [2018-10-24 22:13:28,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:28,610 INFO L481 AbstractCegarLoop]: Abstraction has 5525 states and 6667 transitions. [2018-10-24 22:13:28,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:13:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6667 transitions. [2018-10-24 22:13:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-24 22:13:28,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:28,617 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:13:28,617 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:28,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash -998255095, now seen corresponding path program 1 times [2018-10-24 22:13:28,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:28,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:28,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:28,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:28,619 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:13:29,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:29,334 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:13:29,335 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-24 22:13:29,337 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1066], [1068], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:13:29,413 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:13:29,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:13:31,974 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:13:32,454 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:13:32,456 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:13:32,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:32,504 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:13:35,224 INFO L232 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 75.72% of their original sizes. [2018-10-24 22:13:35,224 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:13:35,915 INFO L413 sIntCurrentIteration]: We have 243 unified AI predicates [2018-10-24 22:13:35,915 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:13:35,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:13:35,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 22:13:35,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:35,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:13:35,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:13:35,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:13:35,918 INFO L87 Difference]: Start difference. First operand 5525 states and 6667 transitions. Second operand 8 states. [2018-10-24 22:16:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:16:22,917 INFO L93 Difference]: Finished difference Result 11480 states and 13794 transitions. [2018-10-24 22:16:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:16:22,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2018-10-24 22:16:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:16:22,940 INFO L225 Difference]: With dead ends: 11480 [2018-10-24 22:16:22,941 INFO L226 Difference]: Without dead ends: 5961 [2018-10-24 22:16:22,953 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:16:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2018-10-24 22:16:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5959. [2018-10-24 22:16:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5959 states. [2018-10-24 22:16:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 7112 transitions. [2018-10-24 22:16:23,065 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 7112 transitions. Word has length 244 [2018-10-24 22:16:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:16:23,066 INFO L481 AbstractCegarLoop]: Abstraction has 5959 states and 7112 transitions. [2018-10-24 22:16:23,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:16:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 7112 transitions. [2018-10-24 22:16:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-24 22:16:23,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:16:23,073 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, 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] [2018-10-24 22:16:23,073 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:16:23,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:23,074 INFO L82 PathProgramCache]: Analyzing trace with hash 248035201, now seen corresponding path program 1 times [2018-10-24 22:16:23,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:16:23,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:23,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:23,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:16:23,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:16:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 22:16:23,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:16:23,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:16:23,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:16:23,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:16:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:16:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:16:23,372 INFO L87 Difference]: Start difference. First operand 5959 states and 7112 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 22:16:25,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:16:25,008 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:16:25,013 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:16:25,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:16:25 BoogieIcfgContainer [2018-10-24 22:16:25,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:16:25,015 INFO L168 Benchmark]: Toolchain (without parser) took 231733.92 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 606.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,016 INFO L168 Benchmark]: CDTParser took 0.21 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 22:16:25,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1719.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 494.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,018 INFO L168 Benchmark]: Boogie Preprocessor took 291.60 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,019 INFO L168 Benchmark]: RCFGBuilder took 13004.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.4 MB). Peak memory consumption was 466.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,019 INFO L168 Benchmark]: TraceAbstraction took 216214.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 123.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:25,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1719.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 494.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 291.60 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13004.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.4 MB). Peak memory consumption was 466.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216214.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 123.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was constructing difference of abstraction (5959states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (2531 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 216.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 205.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3233 SDtfs, 7514 SDslu, 1784 SDs, 0 SdLazy, 14184 SolverSat, 3026 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 286 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5959occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.996011396011396 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 1051.4650205761318 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1246 NumberOfCodeBlocks, 1246 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1239 ConstructedInterpolants, 0 QuantifiedInterpolants, 884130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 619/691 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown