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/Problem16_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:54:58,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:54:58,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:54:58,303 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:54:58,303 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:54:58,304 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:54:58,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:54:58,307 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:54:58,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:54:58,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:54:58,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:54:58,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:54:58,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:54:58,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:54:58,316 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:54:58,317 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:54:58,318 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:54:58,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:54:58,322 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:54:58,324 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:54:58,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:54:58,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:54:58,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:54:58,342 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:54:58,342 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:54:58,343 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:54:58,344 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:54:58,344 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:54:58,368 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:54:58,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:54:58,369 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:54:58,370 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:54:58,370 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:54:58,370 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:54:58,370 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:54:58,371 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:54:58,371 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:54:58,371 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:54:58,371 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:54:58,371 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:54:58,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:54:58,372 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:54:58,372 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:54:58,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:54:58,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:54:58,373 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:54:58,373 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:54:58,373 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:54:58,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:54:58,374 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:54:58,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:54:58,374 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:54:58,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:54:58,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:54:58,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:54:58,375 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:54:58,375 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:54:58,375 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:54:58,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:54:58,376 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:54:58,376 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:54:58,376 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:54:58,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:54:58,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:54:58,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:54:58,451 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:54:58,451 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:54:58,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-10-24 21:54:58,516 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ae7cfea7/94674e06ad694a1d9fed3ccf56f584dd/FLAG0927f49ec [2018-10-24 21:54:59,100 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:54:59,100 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-10-24 21:54:59,123 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ae7cfea7/94674e06ad694a1d9fed3ccf56f584dd/FLAG0927f49ec [2018-10-24 21:54:59,147 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ae7cfea7/94674e06ad694a1d9fed3ccf56f584dd [2018-10-24 21:54:59,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:54:59,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:54:59,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:54:59,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:54:59,171 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:54:59,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:59" (1/1) ... [2018-10-24 21:54:59,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1074adb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:59, skipping insertion in model container [2018-10-24 21:54:59,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:59" (1/1) ... [2018-10-24 21:54:59,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:54:59,300 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:55:00,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:55:00,110 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:55:00,387 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:55:00,408 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:55:00,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00 WrapperNode [2018-10-24 21:55:00,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:55:00,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:55:00,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:55:00,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:55:00,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:55:00,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:55:00,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:55:00,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:55:00,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... [2018-10-24 21:55:00,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:55:00,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:55:00,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:55:00,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:55:00,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:55:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:55:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:55:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:55:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:55:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:55:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:55:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:55:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:55:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:55:01,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:55:07,327 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:55:07,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:07 BoogieIcfgContainer [2018-10-24 21:55:07,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:55:07,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:55:07,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:55:07,338 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:55:07,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:54:59" (1/3) ... [2018-10-24 21:55:07,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e46b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:07, skipping insertion in model container [2018-10-24 21:55:07,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:55:00" (2/3) ... [2018-10-24 21:55:07,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e46b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:55:07, skipping insertion in model container [2018-10-24 21:55:07,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:55:07" (3/3) ... [2018-10-24 21:55:07,344 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label07_true-unreach-call.c [2018-10-24 21:55:07,353 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:55:07,361 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:55:07,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:55:07,419 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:55:07,419 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:55:07,419 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:55:07,419 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:55:07,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:55:07,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:55:07,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:55:07,420 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:55:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:55:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 21:55:07,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:55:07,465 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:55:07,468 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:55:07,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1432875621, now seen corresponding path program 1 times [2018-10-24 21:55:07,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:55:07,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:07,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:55:07,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:07,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:55:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:55:07,940 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:55:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:55:08,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:55:08,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:55:08,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:08,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:55:08,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:55:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:55:08,073 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:55:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:55:11,538 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:55:11,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:55:11,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-10-24 21:55:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:55:11,564 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:55:11,565 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:55:11,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:55:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:55:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:55:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:55:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-24 21:55:11,733 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 61 [2018-10-24 21:55:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:55:11,733 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-24 21:55:11,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:55:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-24 21:55:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 21:55:11,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:55:11,750 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:55:11,751 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:55:11,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1517109448, now seen corresponding path program 1 times [2018-10-24 21:55:11,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:55:11,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:11,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:55:11,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:11,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:55:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:55:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:55:12,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:55:12,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:55:12,167 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:12,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:55:12,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:55:12,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:55:12,170 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-24 21:55:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:55:24,650 INFO L93 Difference]: Finished difference Result 2959 states and 5492 transitions. [2018-10-24 21:55:24,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:55:24,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-24 21:55:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:55:24,685 INFO L225 Difference]: With dead ends: 2959 [2018-10-24 21:55:24,685 INFO L226 Difference]: Without dead ends: 2221 [2018-10-24 21:55:24,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:55:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-10-24 21:55:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2170. [2018-10-24 21:55:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2170 states. [2018-10-24 21:55:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3670 transitions. [2018-10-24 21:55:24,825 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3670 transitions. Word has length 137 [2018-10-24 21:55:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:55:24,825 INFO L481 AbstractCegarLoop]: Abstraction has 2170 states and 3670 transitions. [2018-10-24 21:55:24,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:55:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3670 transitions. [2018-10-24 21:55:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 21:55:24,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:55:24,831 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:55:24,832 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:55:24,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:24,832 INFO L82 PathProgramCache]: Analyzing trace with hash -726077568, now seen corresponding path program 1 times [2018-10-24 21:55:24,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:55:24,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:24,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:55:24,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:24,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:55:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:55:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:55:25,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:55:25,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:55:25,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:25,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:55:25,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:55:25,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:55:25,186 INFO L87 Difference]: Start difference. First operand 2170 states and 3670 transitions. Second operand 6 states. [2018-10-24 21:55:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:55:31,287 INFO L93 Difference]: Finished difference Result 8031 states and 14213 transitions. [2018-10-24 21:55:31,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:55:31,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 21:55:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:55:31,339 INFO L225 Difference]: With dead ends: 8031 [2018-10-24 21:55:31,340 INFO L226 Difference]: Without dead ends: 5867 [2018-10-24 21:55:31,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:55:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2018-10-24 21:55:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5813. [2018-10-24 21:55:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5813 states. [2018-10-24 21:55:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5813 states to 5813 states and 8926 transitions. [2018-10-24 21:55:31,577 INFO L78 Accepts]: Start accepts. Automaton has 5813 states and 8926 transitions. Word has length 141 [2018-10-24 21:55:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:55:31,577 INFO L481 AbstractCegarLoop]: Abstraction has 5813 states and 8926 transitions. [2018-10-24 21:55:31,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:55:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5813 states and 8926 transitions. [2018-10-24 21:55:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 21:55:31,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:55:31,587 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:55:31,587 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:55:31,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:31,589 INFO L82 PathProgramCache]: Analyzing trace with hash 664486408, now seen corresponding path program 1 times [2018-10-24 21:55:31,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:55:31,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:31,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:55:31,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:31,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:55:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:55:31,898 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:55:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:55:31,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:55:31,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:55:31,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:31,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:55:31,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:55:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:55:31,974 INFO L87 Difference]: Start difference. First operand 5813 states and 8926 transitions. Second operand 6 states. [2018-10-24 21:55:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:55:35,218 INFO L93 Difference]: Finished difference Result 13508 states and 21994 transitions. [2018-10-24 21:55:35,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:55:35,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 21:55:35,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:55:35,284 INFO L225 Difference]: With dead ends: 13508 [2018-10-24 21:55:35,284 INFO L226 Difference]: Without dead ends: 7701 [2018-10-24 21:55:35,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:55:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2018-10-24 21:55:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 7634. [2018-10-24 21:55:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7634 states. [2018-10-24 21:55:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 11481 transitions. [2018-10-24 21:55:35,653 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 11481 transitions. Word has length 177 [2018-10-24 21:55:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:55:35,653 INFO L481 AbstractCegarLoop]: Abstraction has 7634 states and 11481 transitions. [2018-10-24 21:55:35,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:55:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 11481 transitions. [2018-10-24 21:55:35,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-24 21:55:35,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:55:35,664 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:55:35,665 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:55:35,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:35,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1642365103, now seen corresponding path program 1 times [2018-10-24 21:55:35,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:55:35,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:35,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:55:35,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:55:35,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:55:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:55:35,939 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:55:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 108 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:55:36,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:55:36,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:55:36,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-24 21:55:36,057 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [721], [725], [728], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:55:36,131 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:55:36,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:55:37,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:55:37,911 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:55:37,913 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:55:37,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:55:37,931 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:55:39,799 INFO L232 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 78.26% of their original sizes. [2018-10-24 21:55:39,800 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:55:40,050 INFO L413 sIntCurrentIteration]: We have 226 unified AI predicates [2018-10-24 21:55:40,050 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:55:40,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:55:40,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:55:40,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:40,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:55:40,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:55:40,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:55:40,053 INFO L87 Difference]: Start difference. First operand 7634 states and 11481 transitions. Second operand 7 states. [2018-10-24 21:56:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:07,316 INFO L93 Difference]: Finished difference Result 15602 states and 23449 transitions. [2018-10-24 21:56:07,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:56:07,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2018-10-24 21:56:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:07,371 INFO L225 Difference]: With dead ends: 15602 [2018-10-24 21:56:07,374 INFO L226 Difference]: Without dead ends: 7974 [2018-10-24 21:56:07,411 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:56:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7974 states. [2018-10-24 21:56:07,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7974 to 7972. [2018-10-24 21:56:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7972 states. [2018-10-24 21:56:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 11828 transitions. [2018-10-24 21:56:07,920 INFO L78 Accepts]: Start accepts. Automaton has 7972 states and 11828 transitions. Word has length 227 [2018-10-24 21:56:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:07,920 INFO L481 AbstractCegarLoop]: Abstraction has 7972 states and 11828 transitions. [2018-10-24 21:56:07,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:56:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7972 states and 11828 transitions. [2018-10-24 21:56:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 21:56:07,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:07,927 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:07,927 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:07,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1867363835, now seen corresponding path program 1 times [2018-10-24 21:56:07,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:07,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:07,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:07,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:07,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:08,190 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:56:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 21:56:08,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:56:08,627 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:56:08,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 21:56:08,628 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [728], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:56:08,634 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:56:08,634 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:56:09,861 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:56:17,157 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:56:17,157 INFO L272 AbstractInterpreter]: Visited 100 different actions 291 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:56:17,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:17,184 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:56:20,737 INFO L232 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 79.34% of their original sizes. [2018-10-24 21:56:20,737 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:57:22,664 INFO L413 sIntCurrentIteration]: We have 236 unified AI predicates [2018-10-24 21:57:22,664 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:57:22,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:57:22,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 21:57:22,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:22,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 21:57:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 21:57:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:57:22,667 INFO L87 Difference]: Start difference. First operand 7972 states and 11828 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 21:58:45,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:58:45,320 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:58:45,325 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:58:45,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:58:45 BoogieIcfgContainer [2018-10-24 21:58:45,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:58:45,327 INFO L168 Benchmark]: Toolchain (without parser) took 226165.93 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 686.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,328 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:58:45,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1245.71 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 357.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,331 INFO L168 Benchmark]: Boogie Preprocessor took 183.37 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,332 INFO L168 Benchmark]: RCFGBuilder took 6376.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,332 INFO L168 Benchmark]: TraceAbstraction took 217996.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 451.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:58:45,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1245.71 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 357.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.37 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6376.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217996.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 451.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (7972states) and FLOYD_HOARE automaton (currently 18 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (555 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 217.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 135.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 905 SDtfs, 7025 SDslu, 584 SDs, 0 SdLazy, 10334 SolverSat, 2855 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 506 GetRequests, 378 SyntacticMatches, 79 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 64.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7972occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952631909153647 AbsIntWeakeningRatio, 0.11255411255411256 AbsIntAvgWeakeningVarsNumRemoved, 612.7294372294373 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 174 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 974 ConstructedInterpolants, 0 QuantifiedInterpolants, 634468 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 453/544 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown