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_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:45:37,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:45:37,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:45:37,435 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:45:37,436 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:45:37,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:45:37,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:45:37,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:45:37,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:45:37,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:45:37,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:45:37,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:45:37,444 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:45:37,445 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:45:37,446 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:45:37,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:45:37,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:45:37,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:45:37,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:45:37,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:45:37,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:45:37,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:45:37,467 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:45:37,467 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:45:37,468 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:45:37,469 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:45:37,470 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:45:37,470 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:45:37,471 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:45:37,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:45:37,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:45:37,476 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 22:45:37,478 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 [2018-10-23 22:45:37,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:45:37,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:45:37,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:45:37,514 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:45:37,514 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:45:37,514 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:45:37,514 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:45:37,514 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:45:37,515 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:45:37,515 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:45:37,515 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:45:37,515 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:45:37,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:45:37,516 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:45:37,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:45:37,519 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:45:37,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:45:37,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:45:37,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:45:37,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:45:37,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:45:37,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:45:37,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:45:37,521 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:45:37,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:45:37,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:45:37,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:45:37,522 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:45:37,522 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:45:37,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:45:37,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:45:37,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:45:37,612 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:45:37,613 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:45:37,614 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-23 22:45:37,677 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e16a36b87/673f131a951845f38876722b72219f68/FLAGe79bae0ca [2018-10-23 22:45:38,362 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:45:38,363 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-23 22:45:38,394 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e16a36b87/673f131a951845f38876722b72219f68/FLAGe79bae0ca [2018-10-23 22:45:38,411 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e16a36b87/673f131a951845f38876722b72219f68 [2018-10-23 22:45:38,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:45:38,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:45:38,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:45:38,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:45:38,427 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:45:38,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:45:38" (1/1) ... [2018-10-23 22:45:38,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37cd0be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:38, skipping insertion in model container [2018-10-23 22:45:38,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:45:38" (1/1) ... [2018-10-23 22:45:38,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:45:38,563 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:45:39,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:45:39,523 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:45:39,974 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:45:39,998 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:45:39,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39 WrapperNode [2018-10-23 22:45:39,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:45:40,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:45:40,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:45:40,000 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:45:40,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:45:40,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:45:40,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:45:40,460 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:45:40,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (1/1) ... [2018-10-23 22:45:40,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:45:40,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:45:40,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:45:40,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:45:40,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (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 [2018-10-23 22:45:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:45:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:45:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:45:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:45:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:45:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:45:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:45:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:45:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:45:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:45:51,768 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:45:51,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:45:51 BoogieIcfgContainer [2018-10-23 22:45:51,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:45:51,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:45:51,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:45:51,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:45:51,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:45:38" (1/3) ... [2018-10-23 22:45:51,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0e3063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:45:51, skipping insertion in model container [2018-10-23 22:45:51,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:45:39" (2/3) ... [2018-10-23 22:45:51,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0e3063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:45:51, skipping insertion in model container [2018-10-23 22:45:51,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:45:51" (3/3) ... [2018-10-23 22:45:51,778 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label04_false-unreach-call.c [2018-10-23 22:45:51,787 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:45:51,795 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:45:51,813 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:45:51,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:45:51,857 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:45:51,857 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:45:51,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:45:51,857 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:45:51,857 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:45:51,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:45:51,858 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:45:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-23 22:45:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-23 22:45:51,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:45:51,904 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] [2018-10-23 22:45:51,909 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:45:51,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:45:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash -717801530, now seen corresponding path program 1 times [2018-10-23 22:45:51,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:45:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:45:51,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:45:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:45:51,970 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:45:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:45:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:45:52,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:45:52,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:45:52,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:45:52,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:45:52,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:45:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:45:52,374 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-23 22:46:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:46:03,005 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-10-23 22:46:03,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:46:03,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-23 22:46:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:46:03,039 INFO L225 Difference]: With dead ends: 2137 [2018-10-23 22:46:03,039 INFO L226 Difference]: Without dead ends: 1527 [2018-10-23 22:46:03,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:46:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-10-23 22:46:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-10-23 22:46:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-10-23 22:46:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-10-23 22:46:03,220 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 27 [2018-10-23 22:46:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:46:03,220 INFO L481 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-10-23 22:46:03,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:46:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-10-23 22:46:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 22:46:03,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:46:03,227 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:46:03,227 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:46:03,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:46:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1470772279, now seen corresponding path program 1 times [2018-10-23 22:46:03,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:46:03,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:46:03,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:46:03,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:46:03,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:46:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:46:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:46:03,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:46:03,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:46:03,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:46:03,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:46:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:46:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:46:03,592 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-10-23 22:46:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:46:12,937 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-10-23 22:46:12,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:46:12,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-23 22:46:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:46:12,963 INFO L225 Difference]: With dead ends: 4413 [2018-10-23 22:46:12,963 INFO L226 Difference]: Without dead ends: 2906 [2018-10-23 22:46:12,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:46:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-10-23 22:46:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-10-23 22:46:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-10-23 22:46:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-10-23 22:46:13,086 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 99 [2018-10-23 22:46:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:46:13,087 INFO L481 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-10-23 22:46:13,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:46:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-10-23 22:46:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:46:13,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:46:13,091 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:46:13,092 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:46:13,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:46:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash -410380975, now seen corresponding path program 1 times [2018-10-23 22:46:13,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:46:13,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:46:13,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:46:13,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:46:13,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:46:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:46:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:46:13,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:46:13,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:46:13,360 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-10-23 22:46:13,362 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [826], [828], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-23 22:46:13,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:46:13,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:46:15,151 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:46:35,799 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:46:35,801 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-23 22:46:35,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:46:35,824 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:46:35,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:46:35,824 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:46:35,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:46:35,843 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:46:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:46:35,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:47:04,825 WARN L179 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-23 22:47:25,066 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-23 22:47:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:47:25,307 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:47:30,145 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-23 22:47:30,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-23 22:47:32,798 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-23 22:47:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:47:33,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-23 22:47:33,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-23 22:47:33,172 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:47:33,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:47:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:47:33,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-23 22:47:33,173 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-10-23 22:48:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:48:57,920 INFO L93 Difference]: Finished difference Result 11145 states and 16975 transitions. [2018-10-23 22:48:57,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:48:57,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-23 22:48:57,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:48:57,979 INFO L225 Difference]: With dead ends: 11145 [2018-10-23 22:48:57,979 INFO L226 Difference]: Without dead ends: 8278 [2018-10-23 22:48:58,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=52, Invalid=183, Unknown=5, NotChecked=0, Total=240 [2018-10-23 22:48:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2018-10-23 22:48:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 8242. [2018-10-23 22:48:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8242 states. [2018-10-23 22:48:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 11909 transitions. [2018-10-23 22:48:58,260 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 11909 transitions. Word has length 102 [2018-10-23 22:48:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:48:58,261 INFO L481 AbstractCegarLoop]: Abstraction has 8242 states and 11909 transitions. [2018-10-23 22:48:58,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:48:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 11909 transitions. [2018-10-23 22:48:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-23 22:48:58,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:48:58,273 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:48:58,273 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:48:58,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:48:58,274 INFO L82 PathProgramCache]: Analyzing trace with hash 242685404, now seen corresponding path program 1 times [2018-10-23 22:48:58,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:48:58,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:48:58,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:48:58,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:48:58,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:48:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:48:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:48:58,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:48:58,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:48:58,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:48:58,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:48:58,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:48:58,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:48:58,577 INFO L87 Difference]: Start difference. First operand 8242 states and 11909 transitions. Second operand 6 states. [2018-10-23 22:49:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:49:04,205 INFO L93 Difference]: Finished difference Result 20158 states and 29869 transitions. [2018-10-23 22:49:04,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:49:04,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-23 22:49:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:49:04,285 INFO L225 Difference]: With dead ends: 20158 [2018-10-23 22:49:04,285 INFO L226 Difference]: Without dead ends: 11922 [2018-10-23 22:49:04,339 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 [2018-10-23 22:49:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2018-10-23 22:49:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 11824. [2018-10-23 22:49:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11824 states. [2018-10-23 22:49:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11824 states to 11824 states and 15192 transitions. [2018-10-23 22:49:04,695 INFO L78 Accepts]: Start accepts. Automaton has 11824 states and 15192 transitions. Word has length 171 [2018-10-23 22:49:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:49:04,696 INFO L481 AbstractCegarLoop]: Abstraction has 11824 states and 15192 transitions. [2018-10-23 22:49:04,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:49:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11824 states and 15192 transitions. [2018-10-23 22:49:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-23 22:49:04,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:49:04,703 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:49:04,703 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:49:04,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:49:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1066803632, now seen corresponding path program 1 times [2018-10-23 22:49:04,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:49:04,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:04,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:04,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:04,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:49:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 22:49:05,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:49:05,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:49:05,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:49:05,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:49:05,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:49:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:49:05,049 INFO L87 Difference]: Start difference. First operand 11824 states and 15192 transitions. Second operand 4 states. [2018-10-23 22:49:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:49:13,728 INFO L93 Difference]: Finished difference Result 40772 states and 54680 transitions. [2018-10-23 22:49:13,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:49:13,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-23 22:49:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:49:13,877 INFO L225 Difference]: With dead ends: 40772 [2018-10-23 22:49:13,877 INFO L226 Difference]: Without dead ends: 28954 [2018-10-23 22:49:13,998 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 [2018-10-23 22:49:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28954 states. [2018-10-23 22:49:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28954 to 28953. [2018-10-23 22:49:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28953 states. [2018-10-23 22:49:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28953 states to 28953 states and 36514 transitions. [2018-10-23 22:49:14,772 INFO L78 Accepts]: Start accepts. Automaton has 28953 states and 36514 transitions. Word has length 191 [2018-10-23 22:49:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:49:14,773 INFO L481 AbstractCegarLoop]: Abstraction has 28953 states and 36514 transitions. [2018-10-23 22:49:14,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:49:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 28953 states and 36514 transitions. [2018-10-23 22:49:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-23 22:49:14,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:49:14,786 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:49:14,786 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:49:14,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:49:14,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1612335631, now seen corresponding path program 1 times [2018-10-23 22:49:14,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:49:14,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:14,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:14,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:14,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:49:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-23 22:49:15,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:49:15,452 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:49:15,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-23 22:49:15,457 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [826], [828], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1435], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-23 22:49:15,475 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:49:15,476 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:49:17,531 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:49:43,986 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 22:49:43,987 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 22:49:43,990 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 22:49:43,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:49:43,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:49:43,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:44,000 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:49:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:44,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:49:44,092 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 22:49:44,293 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:49:44,294 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:49:44,300 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:49:44,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:49:44 BoogieIcfgContainer [2018-10-23 22:49:44,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:49:44,301 INFO L168 Benchmark]: Toolchain (without parser) took 245879.70 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 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 887.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:49:44,302 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:49:44,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1576.15 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. [2018-10-23 22:49:44,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 459.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:49:44,305 INFO L168 Benchmark]: Boogie Preprocessor took 268.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:49:44,305 INFO L168 Benchmark]: RCFGBuilder took 11041.47 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: 468.7 MB). Peak memory consumption was 468.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:49:44,306 INFO L168 Benchmark]: TraceAbstraction took 232529.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 407.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:49:44,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1576.15 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 459.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 268.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11041.47 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: 468.7 MB). Peak memory consumption was 468.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232529.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 407.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 68). Cancelled while BasicCegarLoop was analyzing trace of length 237 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 232.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 119.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1635 SDtfs, 8394 SDslu, 1261 SDs, 0 SdLazy, 14093 SolverSat, 5063 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 112.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 209 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 57.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28953occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 51.0s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 182 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 58.4s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 787 ConstructedInterpolants, 101 QuantifiedInterpolants, 967589 SizeOfPredicates, 3 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 180/216 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown