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_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:20:05,349 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:20:05,351 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:20:05,363 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:20:05,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:20:05,364 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:20:05,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:20:05,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:20:05,369 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:20:05,370 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:20:05,371 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:20:05,371 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:20:05,372 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:20:05,373 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:20:05,374 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:20:05,375 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:20:05,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:20:05,378 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:20:05,380 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:20:05,381 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:20:05,382 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:20:05,383 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:20:05,386 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:20:05,386 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:20:05,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:20:05,388 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:20:05,389 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:20:05,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:20:05,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:20:05,392 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:20:05,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:20:05,393 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 00:20:05,395 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 00:20:05,411 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:20:05,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:20:05,412 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:20:05,412 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:20:05,412 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:20:05,412 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:20:05,413 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:20:05,413 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:20:05,413 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:20:05,413 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:20:05,413 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:20:05,414 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:20:05,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:20:05,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:20:05,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:20:05,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:20:05,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:20:05,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:20:05,416 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:20:05,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:20:05,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:20:05,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:20:05,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:20:05,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:20:05,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:20:05,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:20:05,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:20:05,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:20:05,417 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:20:05,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:20:05,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:20:05,418 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:20:05,418 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:20:05,418 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:20:05,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:20:05,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:20:05,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:20:05,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:20:05,480 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:20:05,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label57_false-unreach-call.c [2018-10-27 00:20:05,552 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d31e2bf24/c6c875a6b2e9416bac79285b37dca5c2/FLAG408991176 [2018-10-27 00:20:06,323 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:20:06,324 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label57_false-unreach-call.c [2018-10-27 00:20:06,353 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d31e2bf24/c6c875a6b2e9416bac79285b37dca5c2/FLAG408991176 [2018-10-27 00:20:06,371 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d31e2bf24/c6c875a6b2e9416bac79285b37dca5c2 [2018-10-27 00:20:06,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:20:06,385 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:20:06,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:20:06,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:20:06,395 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:20:06,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:20:06" (1/1) ... [2018-10-27 00:20:06,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:06, skipping insertion in model container [2018-10-27 00:20:06,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:20:06" (1/1) ... [2018-10-27 00:20:06,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:20:06,519 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:20:07,502 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:20:07,508 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:20:07,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:20:07,923 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:20:07,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07 WrapperNode [2018-10-27 00:20:07,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:20:07,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:20:07,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:20:07,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:20:07,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:20:08,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:20:08,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:20:08,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:20:08,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (1/1) ... [2018-10-27 00:20:08,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:20:08,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:20:08,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:20:08,693 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:20:08,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (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 00:20:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:20:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:20:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:20:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:20:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:20:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:20:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:20:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:20:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:20:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:20:22,792 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:20:22,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:20:22 BoogieIcfgContainer [2018-10-27 00:20:22,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:20:22,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:20:22,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:20:22,803 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:20:22,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:20:06" (1/3) ... [2018-10-27 00:20:22,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e6321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:20:22, skipping insertion in model container [2018-10-27 00:20:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:07" (2/3) ... [2018-10-27 00:20:22,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349e6321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:20:22, skipping insertion in model container [2018-10-27 00:20:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:20:22" (3/3) ... [2018-10-27 00:20:22,809 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label57_false-unreach-call.c [2018-10-27 00:20:22,819 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:20:22,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:20:22,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:20:22,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:20:22,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:20:22,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:20:22,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:20:22,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:20:22,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:20:22,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:20:22,898 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:20:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 00:20:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-27 00:20:22,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:20:22,949 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] [2018-10-27 00:20:22,951 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:20:22,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:20:22,957 INFO L82 PathProgramCache]: Analyzing trace with hash -43851924, now seen corresponding path program 1 times [2018-10-27 00:20:22,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:20:23,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:23,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:20:23,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:23,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:20:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:20:23,447 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 00:20:23,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:20:23,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:20:23,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:20:23,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:20:23,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:20:23,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:20:23,481 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 00:20:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:20:33,283 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-27 00:20:33,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:20:33,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-27 00:20:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:20:33,340 INFO L225 Difference]: With dead ends: 2166 [2018-10-27 00:20:33,340 INFO L226 Difference]: Without dead ends: 1556 [2018-10-27 00:20:33,354 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 00:20:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-27 00:20:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-27 00:20:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 00:20:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-27 00:20:33,513 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 24 [2018-10-27 00:20:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:20:33,514 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-27 00:20:33,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:20:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-27 00:20:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-27 00:20:33,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:20:33,520 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:20:33,520 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:20:33,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:20:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash -397529710, now seen corresponding path program 1 times [2018-10-27 00:20:33,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:20:33,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:33,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:20:33,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:33,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:20:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:20:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:20:33,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:20:33,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:20:33,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:20:33,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:20:33,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:20:33,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:20:33,984 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-27 00:20:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:20:44,543 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-27 00:20:44,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:20:44,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-27 00:20:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:20:44,561 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 00:20:44,561 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 00:20:44,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:20:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 00:20:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-27 00:20:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-27 00:20:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-27 00:20:44,654 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 100 [2018-10-27 00:20:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:20:44,655 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-27 00:20:44,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:20:44,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-27 00:20:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-27 00:20:44,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:20:44,665 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:20:44,665 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:20:44,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:20:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1715903094, now seen corresponding path program 1 times [2018-10-27 00:20:44,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:20:44,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:44,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:20:44,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:44,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:20:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:20:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:20:45,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:20:45,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:20:45,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:20:45,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:20:45,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:20:45,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:20:45,110 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-27 00:20:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:20:51,944 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-27 00:20:51,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:20:51,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-27 00:20:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:20:51,978 INFO L225 Difference]: With dead ends: 4880 [2018-10-27 00:20:51,978 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 00:20:51,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:20:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 00:20:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-27 00:20:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 00:20:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-27 00:20:52,067 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 104 [2018-10-27 00:20:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:20:52,068 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-27 00:20:52,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:20:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-27 00:20:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 00:20:52,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:20:52,070 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:20:52,071 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:20:52,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:20:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash 405307367, now seen corresponding path program 1 times [2018-10-27 00:20:52,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:20:52,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:52,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:20:52,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:52,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:20:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:20:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:20:52,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:20:52,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:20:52,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:20:52,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:20:52,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:20:52,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:20:52,257 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-27 00:20:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:20:58,330 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-27 00:20:58,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:20:58,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-27 00:20:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:20:58,352 INFO L225 Difference]: With dead ends: 5754 [2018-10-27 00:20:58,352 INFO L226 Difference]: Without dead ends: 2880 [2018-10-27 00:20:58,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:20:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-27 00:20:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-27 00:20:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 00:20:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-27 00:20:58,443 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 134 [2018-10-27 00:20:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:20:58,449 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-27 00:20:58,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:20:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-27 00:20:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-27 00:20:58,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:20:58,453 INFO L375 BasicCegarLoop]: trace histogram [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, 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 00:20:58,453 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:20:58,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:20:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 400329504, now seen corresponding path program 1 times [2018-10-27 00:20:58,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:20:58,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:58,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:20:58,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:20:58,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:20:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:20:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 00:20:59,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:20:59,019 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:20:59,020 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-10-27 00:20:59,022 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [802], [804], [807], [815], [823], [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], [1227], [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 00:20:59,092 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:20:59,093 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:21:01,038 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:21:32,228 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 00:21:32,229 INFO L272 AbstractInterpreter]: Visited 97 different actions 467 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 00:21:32,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:32,245 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 00:21:32,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:21:32,246 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 00:21:32,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:32,265 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:21:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:32,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:21:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 00:21:33,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:21:35,544 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-27 00:21:36,163 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-27 00:21:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:36,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 00:21:36,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-27 00:21:36,668 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 00:21:36,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 00:21:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 00:21:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-27 00:21:36,672 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 10 states. [2018-10-27 00:22:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:22:06,907 INFO L93 Difference]: Finished difference Result 15015 states and 20251 transitions. [2018-10-27 00:22:06,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 00:22:06,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2018-10-27 00:22:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:22:06,966 INFO L225 Difference]: With dead ends: 15015 [2018-10-27 00:22:06,966 INFO L226 Difference]: Without dead ends: 12141 [2018-10-27 00:22:06,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-27 00:22:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12141 states. [2018-10-27 00:22:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12141 to 12025. [2018-10-27 00:22:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12025 states. [2018-10-27 00:22:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 14823 transitions. [2018-10-27 00:22:07,328 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 14823 transitions. Word has length 188 [2018-10-27 00:22:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:22:07,329 INFO L481 AbstractCegarLoop]: Abstraction has 12025 states and 14823 transitions. [2018-10-27 00:22:07,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 00:22:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 14823 transitions. [2018-10-27 00:22:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 00:22:07,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:22:07,334 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:07,335 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:22:07,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:22:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -841312883, now seen corresponding path program 1 times [2018-10-27 00:22:07,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:22:07,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:07,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:22:07,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:07,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:22:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:22:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 35 proven. 73 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 00:22:08,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:22:08,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:22:08,293 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-27 00:22:08,294 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [802], [804], [807], [815], [823], [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], [1227], [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], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 00:22:08,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:22:08,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:22:10,441 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:22:10,870 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:22:10,870 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 00:22:10,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:22:10,905 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:22:12,993 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 75.16% of their original sizes. [2018-10-27 00:22:12,993 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:22:13,632 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-10-27 00:22:13,632 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:22:13,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:22:13,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-27 00:22:13,633 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:22:13,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:22:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:22:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:22:13,635 INFO L87 Difference]: Start difference. First operand 12025 states and 14823 transitions. Second operand 8 states. Received shutdown request... [2018-10-27 00:23:52,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:23:52,134 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:23:52,139 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:23:52,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:23:52 BoogieIcfgContainer [2018-10-27 00:23:52,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:23:52,140 INFO L168 Benchmark]: Toolchain (without parser) took 225756.17 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 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 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 00:23:52,141 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:23:52,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1538.46 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 00:23:52,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 503.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:23:52,144 INFO L168 Benchmark]: Boogie Preprocessor took 263.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:23:52,145 INFO L168 Benchmark]: RCFGBuilder took 14103.76 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: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:23:52,146 INFO L168 Benchmark]: TraceAbstraction took 209341.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 00:23:52,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1538.46 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 503.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14103.76 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: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209341.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 59). Cancelled while BasicCegarLoop was constructing difference of abstraction (12025states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (16147 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 209.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 162.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2176 SDtfs, 11567 SDslu, 2255 SDs, 0 SdLazy, 21826 SolverSat, 4325 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 129.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 633 GetRequests, 583 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12025occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 35.8s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9953625322046373 AbsIntWeakeningRatio, 0.1291866028708134 AbsIntAvgWeakeningVarsNumRemoved, 1040.2631578947369 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 657 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 948 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1128 ConstructedInterpolants, 93 QuantifiedInterpolants, 1120279 SizeOfPredicates, 2 NumberOfNonLiveVariables, 381 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 343/491 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown