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_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:31:39,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:31:39,280 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:31:39,297 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:31:39,298 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:31:39,299 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:31:39,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:31:39,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:31:39,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:31:39,308 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:31:39,309 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:31:39,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:31:39,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:31:39,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:31:39,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:31:39,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:31:39,319 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:31:39,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:31:39,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:31:39,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:31:39,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:31:39,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:31:39,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:31:39,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:31:39,343 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:31:39,343 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:31:39,344 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:31:39,345 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:31:39,346 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:31:39,348 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:31:39,348 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:31:39,349 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 03:31:39,353 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 [2018-10-27 03:31:39,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:31:39,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:31:39,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:31:39,384 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:31:39,385 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:31:39,385 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:31:39,385 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:31:39,385 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:31:39,386 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:31:39,386 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:31:39,386 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:31:39,387 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:31:39,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:31:39,388 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:31:39,388 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:31:39,388 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:31:39,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:31:39,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:31:39,389 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:31:39,390 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:31:39,391 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:31:39,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:31:39,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:31:39,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:31:39,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:31:39,392 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:31:39,392 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:31:39,392 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:31:39,393 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:31:39,393 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:31:39,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:31:39,393 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:31:39,393 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:31:39,394 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:31:39,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:31:39,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:31:39,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:31:39,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:31:39,472 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:31:39,472 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-27 03:31:39,538 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4800ef23/05c312de42aa4f648f2bb733f56ed66f/FLAG007fb9cfc [2018-10-27 03:31:40,240 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:31:40,241 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-10-27 03:31:40,264 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4800ef23/05c312de42aa4f648f2bb733f56ed66f/FLAG007fb9cfc [2018-10-27 03:31:40,282 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4800ef23/05c312de42aa4f648f2bb733f56ed66f [2018-10-27 03:31:40,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:31:40,296 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:31:40,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:31:40,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:31:40,303 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:31:40,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:31:40" (1/1) ... [2018-10-27 03:31:40,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad7146b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:40, skipping insertion in model container [2018-10-27 03:31:40,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:31:40" (1/1) ... [2018-10-27 03:31:40,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:31:40,441 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:31:41,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:31:41,453 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:31:41,851 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:31:41,877 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:31:41,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41 WrapperNode [2018-10-27 03:31:41,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:31:41,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:31:41,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:31:41,879 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:31:41,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:41,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:31:42,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:31:42,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:31:42,341 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:31:42,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (1/1) ... [2018-10-27 03:31:42,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:31:42,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:31:42,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:31:42,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:31:42,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (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 [2018-10-27 03:31:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:31:42,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:31:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:31:42,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:31:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:31:42,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:31:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:31:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:31:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:31:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:31:53,798 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:31:53,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:31:53 BoogieIcfgContainer [2018-10-27 03:31:53,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:31:53,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:31:53,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:31:53,804 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:31:53,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:31:40" (1/3) ... [2018-10-27 03:31:53,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdcc045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:31:53, skipping insertion in model container [2018-10-27 03:31:53,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:41" (2/3) ... [2018-10-27 03:31:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdcc045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:31:53, skipping insertion in model container [2018-10-27 03:31:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:31:53" (3/3) ... [2018-10-27 03:31:53,808 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label19_true-unreach-call.c [2018-10-27 03:31:53,818 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:31:53,828 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:31:53,846 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:31:53,889 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:31:53,889 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:31:53,889 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:31:53,889 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:31:53,889 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:31:53,889 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:31:53,890 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:31:53,890 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:31:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 03:31:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 03:31:53,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:31:53,941 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] [2018-10-27 03:31:53,944 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:31:53,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:31:53,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1876496990, now seen corresponding path program 1 times [2018-10-27 03:31:53,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:31:54,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:31:54,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:31:54,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:31:54,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:31:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:31:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:31:54,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:31:54,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:31:54,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:31:54,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:31:54,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:31:54,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:31:54,573 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 03:32:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:32:05,598 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-27 03:32:05,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:32:05,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-27 03:32:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:32:05,632 INFO L225 Difference]: With dead ends: 2164 [2018-10-27 03:32:05,632 INFO L226 Difference]: Without dead ends: 1554 [2018-10-27 03:32:05,643 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 [2018-10-27 03:32:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-27 03:32:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-27 03:32:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-27 03:32:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-27 03:32:05,771 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 49 [2018-10-27 03:32:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:32:05,772 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-27 03:32:05,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:32:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-27 03:32:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 03:32:05,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:32:05,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:32:05,784 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:32:05,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1564943023, now seen corresponding path program 1 times [2018-10-27 03:32:05,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:32:05,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:05,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:32:05,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:05,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:32:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:32:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:06,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:32:06,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:32:06,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:32:06,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:32:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:32:06,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:32:06,077 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-27 03:32:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:32:13,551 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-27 03:32:13,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:32:13,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-27 03:32:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:32:13,569 INFO L225 Difference]: With dead ends: 3031 [2018-10-27 03:32:13,569 INFO L226 Difference]: Without dead ends: 1985 [2018-10-27 03:32:13,574 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 [2018-10-27 03:32:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-27 03:32:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-27 03:32:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 03:32:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-27 03:32:13,666 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 121 [2018-10-27 03:32:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:32:13,666 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-27 03:32:13,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:32:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-27 03:32:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-27 03:32:13,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:32:13,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:32:13,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:32:13,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1382747383, now seen corresponding path program 1 times [2018-10-27 03:32:13,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:32:13,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:13,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:32:13,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:13,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:32:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:32:14,235 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 03:32:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:14,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:32:14,556 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:32:14,557 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 125 with the following transitions: [2018-10-27 03:32:14,561 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], [1002], [1004], [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] [2018-10-27 03:32:14,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:32:14,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:32:16,011 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:32:34,654 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:32:34,656 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. [2018-10-27 03:32:34,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:34,673 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:32:34,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:32:34,674 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 [2018-10-27 03:32:34,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:32:34,697 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:32:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:32:34,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:32:35,629 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-27 03:32:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:36,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:32:36,873 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-10-27 03:32:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:37,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 03:32:37,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 03:32:37,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:32:37,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:32:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:32:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-27 03:32:37,263 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-27 03:33:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:33:15,682 INFO L93 Difference]: Finished difference Result 7520 states and 12880 transitions. [2018-10-27 03:33:15,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 03:33:15,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-27 03:33:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:33:15,716 INFO L225 Difference]: With dead ends: 7520 [2018-10-27 03:33:15,716 INFO L226 Difference]: Without dead ends: 5567 [2018-10-27 03:33:15,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-27 03:33:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2018-10-27 03:33:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5559. [2018-10-27 03:33:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2018-10-27 03:33:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 8691 transitions. [2018-10-27 03:33:15,891 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 8691 transitions. Word has length 124 [2018-10-27 03:33:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:33:15,892 INFO L481 AbstractCegarLoop]: Abstraction has 5559 states and 8691 transitions. [2018-10-27 03:33:15,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:33:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 8691 transitions. [2018-10-27 03:33:15,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 03:33:15,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:33:15,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:33:15,898 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:33:15,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:33:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1130206287, now seen corresponding path program 1 times [2018-10-27 03:33:15,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:33:15,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:15,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:33:15,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:15,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:33:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:33:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:33:16,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:33:16,182 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:33:16,183 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-27 03:33:16,183 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], [1002], [1004], [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], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:33:16,188 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:33:16,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:33:18,158 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:33:27,869 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:33:27,869 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 03:33:27,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:33:27,911 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:33:27,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:33:27,912 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) [2018-10-27 03:33:27,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:33:27,924 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:33:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:33:27,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:33:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:33:28,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:33:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:33:28,333 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:33:28,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 03:33:28,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:33:28,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:33:28,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:33:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:33:28,335 INFO L87 Difference]: Start difference. First operand 5559 states and 8691 transitions. Second operand 3 states. [2018-10-27 03:33:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:33:35,252 INFO L93 Difference]: Finished difference Result 13737 states and 21447 transitions. [2018-10-27 03:33:35,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:33:35,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-10-27 03:33:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:33:35,293 INFO L225 Difference]: With dead ends: 13737 [2018-10-27 03:33:35,294 INFO L226 Difference]: Without dead ends: 8184 [2018-10-27 03:33:35,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 273 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:33:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8184 states. [2018-10-27 03:33:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8184 to 8183. [2018-10-27 03:33:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8183 states. [2018-10-27 03:33:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 12040 transitions. [2018-10-27 03:33:35,547 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 12040 transitions. Word has length 137 [2018-10-27 03:33:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:33:35,548 INFO L481 AbstractCegarLoop]: Abstraction has 8183 states and 12040 transitions. [2018-10-27 03:33:35,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:33:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 12040 transitions. [2018-10-27 03:33:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 03:33:35,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:33:35,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:33:35,552 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:33:35,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:33:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1656879347, now seen corresponding path program 1 times [2018-10-27 03:33:35,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:33:35,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:35,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:33:35,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:35,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:33:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:33:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:33:35,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:33:35,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:33:35,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:33:35,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:33:35,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:33:35,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:33:35,886 INFO L87 Difference]: Start difference. First operand 8183 states and 12040 transitions. Second operand 5 states. [2018-10-27 03:33:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:33:52,098 INFO L93 Difference]: Finished difference Result 25871 states and 40015 transitions. [2018-10-27 03:33:52,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:33:52,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-27 03:33:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:33:52,197 INFO L225 Difference]: With dead ends: 25871 [2018-10-27 03:33:52,197 INFO L226 Difference]: Without dead ends: 17694 [2018-10-27 03:33:52,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:33:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17694 states. [2018-10-27 03:33:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17694 to 17571. [2018-10-27 03:33:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17571 states. [2018-10-27 03:33:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17571 states to 17571 states and 24293 transitions. [2018-10-27 03:33:52,666 INFO L78 Accepts]: Start accepts. Automaton has 17571 states and 24293 transitions. Word has length 139 [2018-10-27 03:33:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:33:52,666 INFO L481 AbstractCegarLoop]: Abstraction has 17571 states and 24293 transitions. [2018-10-27 03:33:52,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:33:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 17571 states and 24293 transitions. [2018-10-27 03:33:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-27 03:33:52,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:33:52,674 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:33:52,674 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:33:52,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:33:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1062053734, now seen corresponding path program 1 times [2018-10-27 03:33:52,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:33:52,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:52,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:33:52,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:33:52,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:33:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:33:52,971 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:33:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 03:33:53,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:33:53,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:33:53,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-27 03:33:53,551 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], [1002], [1004], [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], [1224], [1228], [1232], [1235], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:33:53,559 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:33:53,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:33:54,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:34:10,186 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:34:10,187 INFO L272 AbstractInterpreter]: Visited 87 different actions 572 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. [2018-10-27 03:34:10,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:34:10,196 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:34:10,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:34:10,196 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:34:10,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:34:10,206 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:34:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:34:10,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:34:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:34:10,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:34:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:34:10,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 03:34:10,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 03:34:10,590 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 03:34:10,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 03:34:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 03:34:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:34:10,591 INFO L87 Difference]: Start difference. First operand 17571 states and 24293 transitions. Second operand 9 states. [2018-10-27 03:34:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:34:20,025 INFO L93 Difference]: Finished difference Result 35220 states and 48994 transitions. [2018-10-27 03:34:20,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 03:34:20,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2018-10-27 03:34:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:34:20,073 INFO L225 Difference]: With dead ends: 35220 [2018-10-27 03:34:20,073 INFO L226 Difference]: Without dead ends: 15012 [2018-10-27 03:34:20,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 402 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:34:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15012 states. [2018-10-27 03:34:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15012 to 14540. [2018-10-27 03:34:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14540 states. [2018-10-27 03:34:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14540 states to 14540 states and 17054 transitions. [2018-10-27 03:34:20,377 INFO L78 Accepts]: Start accepts. Automaton has 14540 states and 17054 transitions. Word has length 202 [2018-10-27 03:34:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:34:20,377 INFO L481 AbstractCegarLoop]: Abstraction has 14540 states and 17054 transitions. [2018-10-27 03:34:20,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 03:34:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14540 states and 17054 transitions. [2018-10-27 03:34:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-27 03:34:20,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:34:20,386 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:34:20,386 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:34:20,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:34:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1393136275, now seen corresponding path program 1 times [2018-10-27 03:34:20,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:34:20,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:34:20,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:34:20,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:34:20,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:34:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:34:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 03:34:20,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:34:20,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:34:20,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:34:20,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:34:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:34:20,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:34:20,677 INFO L87 Difference]: Start difference. First operand 14540 states and 17054 transitions. Second operand 3 states. [2018-10-27 03:34:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:34:24,173 INFO L93 Difference]: Finished difference Result 36932 states and 44151 transitions. [2018-10-27 03:34:24,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:34:24,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-10-27 03:34:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:34:24,235 INFO L225 Difference]: With dead ends: 36932 [2018-10-27 03:34:24,235 INFO L226 Difference]: Without dead ends: 18942 [2018-10-27 03:34:24,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:34:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2018-10-27 03:34:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18934. [2018-10-27 03:34:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18934 states. [2018-10-27 03:34:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18934 states to 18934 states and 22018 transitions. [2018-10-27 03:34:24,571 INFO L78 Accepts]: Start accepts. Automaton has 18934 states and 22018 transitions. Word has length 303 [2018-10-27 03:34:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:34:24,572 INFO L481 AbstractCegarLoop]: Abstraction has 18934 states and 22018 transitions. [2018-10-27 03:34:24,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:34:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18934 states and 22018 transitions. [2018-10-27 03:34:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-27 03:34:24,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:34:24,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:34:24,585 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:34:24,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:34:24,586 INFO L82 PathProgramCache]: Analyzing trace with hash 741072818, now seen corresponding path program 1 times [2018-10-27 03:34:24,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:34:24,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:34:24,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:34:24,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:34:24,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:34:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:34:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:34:25,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:34:25,227 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:34:25,227 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-10-27 03:34:25,230 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [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], [1002], [1004], [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], [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], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:34:25,243 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:34:25,244 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:34:33,368 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:35:18,917 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:35:18,918 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 03:35:18,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:35:18,930 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:35:18,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:35:18,930 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:35:18,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:35:18,939 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:35:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:35:19,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:35:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:35:19,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:35:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:35:19,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 03:35:19,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-27 03:35:19,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:35:19,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:35:19,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:35:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:35:19,885 INFO L87 Difference]: Start difference. First operand 18934 states and 22018 transitions. Second operand 6 states. [2018-10-27 03:35:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:35:27,028 INFO L93 Difference]: Finished difference Result 47081 states and 55109 transitions. [2018-10-27 03:35:27,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 03:35:27,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 397 [2018-10-27 03:35:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:35:27,087 INFO L225 Difference]: With dead ends: 47081 [2018-10-27 03:35:27,087 INFO L226 Difference]: Without dead ends: 26835 [2018-10-27 03:35:27,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 793 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:35:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26835 states. [2018-10-27 03:35:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26835 to 23787. [2018-10-27 03:35:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23787 states. [2018-10-27 03:35:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23787 states to 23787 states and 27731 transitions. [2018-10-27 03:35:27,481 INFO L78 Accepts]: Start accepts. Automaton has 23787 states and 27731 transitions. Word has length 397 [2018-10-27 03:35:27,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:35:27,482 INFO L481 AbstractCegarLoop]: Abstraction has 23787 states and 27731 transitions. [2018-10-27 03:35:27,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:35:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23787 states and 27731 transitions. [2018-10-27 03:35:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-27 03:35:27,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:35:27,500 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:35:27,501 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:35:27,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:35:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1829302701, now seen corresponding path program 1 times [2018-10-27 03:35:27,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:35:27,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:35:27,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:35:27,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:35:27,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:35:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:35:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-27 03:35:28,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:35:28,416 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:35:28,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-10-27 03:35:28,417 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], [1002], [1004], [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], [1235], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [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], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:35:28,423 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:35:28,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:35:29,439 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 03:35:38,105 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 03:35:38,106 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 03:35:38,106 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 03:35:38,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:35:38,106 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:35:38,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:35:38,114 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:35:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:35:38,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:35:38,268 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 03:35:38,469 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:35:38,469 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:35:38,473 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:35:38,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:35:38 BoogieIcfgContainer [2018-10-27 03:35:38,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:35:38,474 INFO L168 Benchmark]: Toolchain (without parser) took 238179.36 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 411.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:38,475 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. [2018-10-27 03:35:38,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1580.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:38,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 461.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:38,478 INFO L168 Benchmark]: Boogie Preprocessor took 246.60 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:38,478 INFO L168 Benchmark]: RCFGBuilder took 11212.40 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: 466.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:38,479 INFO L168 Benchmark]: TraceAbstraction took 224672.75 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 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:35:38,484 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 1580.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 461.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.60 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11212.40 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: 466.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224672.75 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 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 134). Cancelled while BasicCegarLoop was analyzing trace of length 478 with TraceHistMax 5,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, 224.5s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 100.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2935 SDtfs, 13114 SDslu, 1858 SDs, 0 SdLazy, 20692 SolverSat, 6276 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 91.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1793 GetRequests, 1723 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23787occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 111.8s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 4188 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 2332 NumberOfCodeBlocks, 2332 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3176 ConstructedInterpolants, 123 QuantifiedInterpolants, 3349743 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1533 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 938/1111 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown