java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem19_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:56:15,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:56:15,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:56:15,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:56:15,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:56:15,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:56:15,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:56:15,452 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:56:15,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:56:15,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:56:15,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:56:15,456 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:56:15,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:56:15,458 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:56:15,460 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:56:15,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:56:15,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:56:15,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:56:15,467 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:56:15,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:56:15,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:56:15,480 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:56:15,483 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:56:15,489 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:56:15,490 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:56:15,491 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:56:15,492 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:56:15,492 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:56:15,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:56:15,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:56:15,509 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:56:15,509 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:56:15,510 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:56:15,510 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:56:15,510 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:56:15,510 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:56:15,511 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:56:15,511 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:56:15,511 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:56:15,511 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:56:15,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:56:15,512 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:56:15,512 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:56:15,513 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:56:15,513 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:56:15,513 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:56:15,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:56:15,513 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:56:15,514 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:56:15,514 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:56:15,514 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:56:15,514 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:56:15,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:56:15,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:56:15,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:56:15,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:56:15,515 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:56:15,515 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:56:15,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:56:15,516 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:56:15,516 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:56:15,516 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:56:15,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:56:15,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:56:15,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:56:15,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:56:15,599 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:56:15,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-07 00:56:15,665 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6a0717f/8c30ce79d3d149bf9fa9b1c1ed1db8e6/FLAG5e7b6bb2d [2018-11-07 00:56:16,531 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:56:16,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-07 00:56:16,575 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6a0717f/8c30ce79d3d149bf9fa9b1c1ed1db8e6/FLAG5e7b6bb2d [2018-11-07 00:56:16,595 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6a0717f/8c30ce79d3d149bf9fa9b1c1ed1db8e6 [2018-11-07 00:56:16,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:56:16,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:56:16,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:56:16,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:56:16,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:56:16,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:16" (1/1) ... [2018-11-07 00:56:16,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31523df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:16, skipping insertion in model container [2018-11-07 00:56:16,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:16" (1/1) ... [2018-11-07 00:56:16,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:56:16,919 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:56:18,944 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:56:18,949 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:56:20,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:56:20,117 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:56:20,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20 WrapperNode [2018-11-07 00:56:20,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:56:20,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:56:20,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:56:20,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:56:20,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:56:20,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:56:20,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:56:20,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:56:20,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:20,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:21,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:21,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2018-11-07 00:56:21,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:56:21,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:56:21,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:56:21,114 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:56:21,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 00:56:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:56:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:56:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:56:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 00:56:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 00:56:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 00:56:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 00:56:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:56:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:56:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:56:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:56:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:56:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:56:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:56:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:56:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:56:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:56:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:56:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:56:36,785 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:56:36,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:36 BoogieIcfgContainer [2018-11-07 00:56:36,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:56:36,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:56:36,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:56:36,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:56:36,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:16" (1/3) ... [2018-11-07 00:56:36,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94372a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:36, skipping insertion in model container [2018-11-07 00:56:36,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (2/3) ... [2018-11-07 00:56:36,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94372a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:36, skipping insertion in model container [2018-11-07 00:56:36,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:36" (3/3) ... [2018-11-07 00:56:36,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-11-07 00:56:36,805 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:56:36,816 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:56:36,833 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:56:36,884 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:56:36,885 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:56:36,885 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:56:36,885 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:56:36,885 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:56:36,885 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:56:36,885 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:56:36,885 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:56:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 00:56:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 00:56:36,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:36,950 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] [2018-11-07 00:56:36,953 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:36,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1224049076, now seen corresponding path program 1 times [2018-11-07 00:56:36,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:37,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:37,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:37,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:37,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:37,418 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:56:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:37,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:37,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:56:37,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:37,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:56:37,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:56:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:56:37,551 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 00:56:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:56:50,660 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-11-07 00:56:50,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:56:50,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 00:56:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:56:50,714 INFO L225 Difference]: With dead ends: 5049 [2018-11-07 00:56:50,714 INFO L226 Difference]: Without dead ends: 3269 [2018-11-07 00:56:50,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:56:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-11-07 00:56:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-11-07 00:56:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-11-07 00:56:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-11-07 00:56:50,913 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 32 [2018-11-07 00:56:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:56:50,913 INFO L480 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-11-07 00:56:50,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:56:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-11-07 00:56:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 00:56:50,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:50,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:56:50,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:50,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash -54041823, now seen corresponding path program 1 times [2018-11-07 00:56:50,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:50,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:50,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:50,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:50,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:51,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:51,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:56:51,240 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:51,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:56:51,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:56:51,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:56:51,244 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-11-07 00:57:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:13,911 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-11-07 00:57:13,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:13,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-07 00:57:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:13,960 INFO L225 Difference]: With dead ends: 12137 [2018-11-07 00:57:13,960 INFO L226 Difference]: Without dead ends: 8925 [2018-11-07 00:57:13,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:57:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-11-07 00:57:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-11-07 00:57:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-11-07 00:57:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-11-07 00:57:14,216 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 104 [2018-11-07 00:57:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:14,217 INFO L480 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-11-07 00:57:14,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-11-07 00:57:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-07 00:57:14,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:14,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:14,221 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:14,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1938657519, now seen corresponding path program 1 times [2018-11-07 00:57:14,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:14,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:14,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:14,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:14,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:57:14,549 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:14,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:57:14,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:57:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:57:14,553 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-11-07 00:57:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:38,930 INFO L93 Difference]: Finished difference Result 32216 states and 52827 transitions. [2018-11-07 00:57:38,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:57:38,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-11-07 00:57:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:39,017 INFO L225 Difference]: With dead ends: 32216 [2018-11-07 00:57:39,018 INFO L226 Difference]: Without dead ends: 23360 [2018-11-07 00:57:39,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:57:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2018-11-07 00:57:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 23170. [2018-11-07 00:57:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23170 states. [2018-11-07 00:57:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23170 states to 23170 states and 32133 transitions. [2018-11-07 00:57:39,673 INFO L78 Accepts]: Start accepts. Automaton has 23170 states and 32133 transitions. Word has length 106 [2018-11-07 00:57:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:39,673 INFO L480 AbstractCegarLoop]: Abstraction has 23170 states and 32133 transitions. [2018-11-07 00:57:39,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:57:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 23170 states and 32133 transitions. [2018-11-07 00:57:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:57:39,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:39,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:39,681 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:39,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1852913499, now seen corresponding path program 1 times [2018-11-07 00:57:39,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:39,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:39,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:39,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:39,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:39,986 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:57:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:40,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:40,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:57:40,319 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:40,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:57:40,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:57:40,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:57:40,321 INFO L87 Difference]: Start difference. First operand 23170 states and 32133 transitions. Second operand 6 states. [2018-11-07 00:57:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:53,159 INFO L93 Difference]: Finished difference Result 52759 states and 75825 transitions. [2018-11-07 00:57:53,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:53,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 00:57:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:53,293 INFO L225 Difference]: With dead ends: 52759 [2018-11-07 00:57:53,293 INFO L226 Difference]: Without dead ends: 29595 [2018-11-07 00:57:53,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:57:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29595 states. [2018-11-07 00:57:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29595 to 29359. [2018-11-07 00:57:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29359 states. [2018-11-07 00:57:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 40703 transitions. [2018-11-07 00:57:54,024 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 40703 transitions. Word has length 111 [2018-11-07 00:57:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:54,025 INFO L480 AbstractCegarLoop]: Abstraction has 29359 states and 40703 transitions. [2018-11-07 00:57:54,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 40703 transitions. [2018-11-07 00:57:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 00:57:54,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:54,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:57:54,031 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:54,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1811621932, now seen corresponding path program 1 times [2018-11-07 00:57:54,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:54,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:54,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:54,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:54,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:54,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:54,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:57:54,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:54,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:57:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:57:54,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:57:54,407 INFO L87 Difference]: Start difference. First operand 29359 states and 40703 transitions. Second operand 5 states. [2018-11-07 00:58:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:58:11,227 INFO L93 Difference]: Finished difference Result 88269 states and 129129 transitions. [2018-11-07 00:58:11,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:58:11,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 00:58:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:58:11,464 INFO L225 Difference]: With dead ends: 88269 [2018-11-07 00:58:11,464 INFO L226 Difference]: Without dead ends: 58916 [2018-11-07 00:58:11,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:58:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58916 states. [2018-11-07 00:58:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58916 to 57676. [2018-11-07 00:58:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57676 states. [2018-11-07 00:58:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57676 states to 57676 states and 76226 transitions. [2018-11-07 00:58:12,902 INFO L78 Accepts]: Start accepts. Automaton has 57676 states and 76226 transitions. Word has length 161 [2018-11-07 00:58:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:58:12,903 INFO L480 AbstractCegarLoop]: Abstraction has 57676 states and 76226 transitions. [2018-11-07 00:58:12,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:58:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 57676 states and 76226 transitions. [2018-11-07 00:58:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 00:58:12,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:58:12,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:58:12,911 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:58:12,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1275866513, now seen corresponding path program 1 times [2018-11-07 00:58:12,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:58:12,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:12,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:58:12,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:12,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:58:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:58:13,283 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:58:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:58:14,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:58:14,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:58:14,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:14,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:58:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:58:14,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:58:14,237 INFO L87 Difference]: Start difference. First operand 57676 states and 76226 transitions. Second operand 6 states. [2018-11-07 00:58:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:58:32,247 INFO L93 Difference]: Finished difference Result 144747 states and 199768 transitions. [2018-11-07 00:58:32,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:58:32,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 00:58:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:58:32,564 INFO L225 Difference]: With dead ends: 144747 [2018-11-07 00:58:32,565 INFO L226 Difference]: Without dead ends: 87077 [2018-11-07 00:58:32,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:58:32,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87077 states. [2018-11-07 00:58:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87077 to 86672. [2018-11-07 00:58:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86672 states. [2018-11-07 00:58:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86672 states to 86672 states and 111103 transitions. [2018-11-07 00:58:34,491 INFO L78 Accepts]: Start accepts. Automaton has 86672 states and 111103 transitions. Word has length 171 [2018-11-07 00:58:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:58:34,491 INFO L480 AbstractCegarLoop]: Abstraction has 86672 states and 111103 transitions. [2018-11-07 00:58:34,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:58:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 86672 states and 111103 transitions. [2018-11-07 00:58:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 00:58:34,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:58:34,507 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:58:34,508 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:58:34,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1456435458, now seen corresponding path program 1 times [2018-11-07 00:58:34,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:58:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:58:34,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:34,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:58:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:58:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 50 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:58:35,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:58:35,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:58:35,052 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-07 00:58:35,055 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5382], [5384], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 00:58:35,156 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:58:35,157 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:58:38,416 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:58:38,417 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:58:38,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:38,430 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:58:40,731 INFO L227 lantSequenceWeakener]: Weakened 189 states. On average, predicates are now at 75.35% of their original sizes. [2018-11-07 00:58:40,731 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:58:41,199 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-11-07 00:58:41,199 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:58:41,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:58:41,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:58:41,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:41,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:58:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:58:41,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:58:41,202 INFO L87 Difference]: Start difference. First operand 86672 states and 111103 transitions. Second operand 7 states. [2018-11-07 00:58:48,473 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 00:59:47,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:59:47,119 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:59:47,124 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:59:47,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:59:47 BoogieIcfgContainer [2018-11-07 00:59:47,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:59:47,126 INFO L168 Benchmark]: Toolchain (without parser) took 210513.52 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 2.3 GB in the end (delta: -929.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,127 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 00:59:47,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3504.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 602.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,129 INFO L168 Benchmark]: Boogie Preprocessor took 390.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,130 INFO L168 Benchmark]: RCFGBuilder took 15673.33 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 450.0 MB). Peak memory consumption was 694.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,131 INFO L168 Benchmark]: TraceAbstraction took 190337.27 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -541.6 MB). Peak memory consumption was 978.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:59:47,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 3504.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 602.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 390.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15673.33 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 450.0 MB). Peak memory consumption was 694.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190337.27 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -541.6 MB). Peak memory consumption was 978.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (86672states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (48582 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 190.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3844 SDtfs, 41677 SDslu, 4072 SDs, 0 SdLazy, 57938 SolverSat, 16379 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 251 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86672occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995054945054945 AbsIntWeakeningRatio, 0.1377551020408163 AbsIntAvgWeakeningVarsNumRemoved, 1037.3724489795918 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 2185 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 882 NumberOfCodeBlocks, 882 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 549842 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 180/249 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown