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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:14:17,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:14:17,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:14:17,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:14:17,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:14:17,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:14:17,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:14:17,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:14:17,767 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:14:17,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:14:17,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:14:17,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:14:17,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:14:17,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:14:17,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:14:17,773 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:14:17,773 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:14:17,775 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:14:17,777 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:14:17,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:14:17,780 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:14:17,781 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:14:17,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:14:17,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:14:17,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:14:17,785 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:14:17,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:14:17,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:14:17,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:14:17,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:14:17,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:14:17,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:14:17,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:14:17,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:14:17,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:14:17,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:14:17,792 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:14:17,808 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:14:17,808 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:14:17,809 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:14:17,809 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:14:17,809 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:14:17,810 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:14:17,810 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:14:17,810 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:14:17,810 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:14:17,810 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:14:17,811 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:14:17,811 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:14:17,812 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:14:17,812 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:14:17,812 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:14:17,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:14:17,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:14:17,812 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:14:17,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:14:17,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:14:17,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:14:17,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:14:17,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:14:17,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:14:17,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:14:17,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:14:17,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:14:17,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:14:17,815 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:14:17,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:14:17,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:14:17,815 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:14:17,815 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:14:17,816 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:14:17,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:14:17,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:14:17,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:14:17,875 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:14:17,876 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:14:17,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00_false-unreach-call.c [2018-10-27 11:14:17,934 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae2050d71/bb580f09e8e2481599d79456ccd2d81a/FLAG0310b296b [2018-10-27 11:14:18,742 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:14:18,743 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label00_false-unreach-call.c [2018-10-27 11:14:18,778 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae2050d71/bb580f09e8e2481599d79456ccd2d81a/FLAG0310b296b [2018-10-27 11:14:18,798 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae2050d71/bb580f09e8e2481599d79456ccd2d81a [2018-10-27 11:14:18,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:14:18,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:14:18,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:14:18,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:14:18,825 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:14:18,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:18" (1/1) ... [2018-10-27 11:14:18,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ae13cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:18, skipping insertion in model container [2018-10-27 11:14:18,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:18" (1/1) ... [2018-10-27 11:14:18,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:14:19,005 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:14:20,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:14:20,283 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:14:20,925 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:14:20,960 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:14:20,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20 WrapperNode [2018-10-27 11:14:20,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:14:20,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:14:20,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:14:20,962 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:14:20,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:14:21,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:14:21,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:14:21,415 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:14:21,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... [2018-10-27 11:14:21,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:14:21,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:14:21,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:14:21,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:14:21,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:14:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:14:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:14:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 11:14:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 11:14:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 11:14:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 11:14:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:14:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:14:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:14:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:14:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:14:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:14:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:14:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:14:33,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:14:33,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:33 BoogieIcfgContainer [2018-10-27 11:14:33,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:14:33,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:14:33,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:14:33,159 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:14:33,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:14:18" (1/3) ... [2018-10-27 11:14:33,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4524ead5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:33, skipping insertion in model container [2018-10-27 11:14:33,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:20" (2/3) ... [2018-10-27 11:14:33,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4524ead5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:33, skipping insertion in model container [2018-10-27 11:14:33,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:33" (3/3) ... [2018-10-27 11:14:33,163 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label00_false-unreach-call.c [2018-10-27 11:14:33,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:14:33,183 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:14:33,201 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:14:33,246 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:14:33,246 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:14:33,246 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:14:33,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:14:33,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:14:33,247 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:14:33,247 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:14:33,247 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:14:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 11:14:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 11:14:33,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:14:33,294 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] [2018-10-27 11:14:33,297 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:14:33,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:14:33,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1894883748, now seen corresponding path program 1 times [2018-10-27 11:14:33,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:14:33,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:33,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:14:33,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:33,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:14:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:14:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:14:33,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:14:33,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:14:33,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:14:33,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:14:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:14:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:14:33,785 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 11:14:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:14:42,519 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 11:14:42,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:14:42,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-27 11:14:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:14:42,560 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 11:14:42,560 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 11:14:42,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:14:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 11:14:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 11:14:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 11:14:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-27 11:14:42,740 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 22 [2018-10-27 11:14:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:14:42,741 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-27 11:14:42,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:14:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-27 11:14:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-27 11:14:42,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:14:42,752 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:14:42,752 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:14:42,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:14:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -852828470, now seen corresponding path program 1 times [2018-10-27 11:14:42,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:14:42,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:42,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:14:42,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:42,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:14:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:14:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:14:43,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:14:43,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:14:43,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:14:43,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:14:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:14:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:14:43,095 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-27 11:14:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:14:55,287 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-27 11:14:55,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:14:55,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-27 11:14:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:14:55,306 INFO L225 Difference]: With dead ends: 4038 [2018-10-27 11:14:55,306 INFO L226 Difference]: Without dead ends: 2440 [2018-10-27 11:14:55,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:14:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-27 11:14:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-27 11:14:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-27 11:14:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-27 11:14:55,390 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 96 [2018-10-27 11:14:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:14:55,391 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-27 11:14:55,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:14:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-27 11:14:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 11:14:55,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:14:55,395 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:14:55,396 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:14:55,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:14:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash 113742438, now seen corresponding path program 1 times [2018-10-27 11:14:55,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:14:55,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:55,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:14:55,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:55,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:14:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:14:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:14:55,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:14:55,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:14:55,599 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:14:55,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:14:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:14:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:14:55,601 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-10-27 11:15:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:05,346 INFO L93 Difference]: Finished difference Result 9492 states and 16758 transitions. [2018-10-27 11:15:05,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:15:05,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-27 11:15:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:05,397 INFO L225 Difference]: With dead ends: 9492 [2018-10-27 11:15:05,397 INFO L226 Difference]: Without dead ends: 7085 [2018-10-27 11:15:05,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:15:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-10-27 11:15:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-10-27 11:15:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-10-27 11:15:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11755 transitions. [2018-10-27 11:15:05,619 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11755 transitions. Word has length 98 [2018-10-27 11:15:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:05,620 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 11755 transitions. [2018-10-27 11:15:05,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:15:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11755 transitions. [2018-10-27 11:15:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 11:15:05,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:05,631 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:15:05,632 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:05,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash -180266589, now seen corresponding path program 1 times [2018-10-27 11:15:05,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:05,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:05,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:05,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:05,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:05,952 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:15:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:15:06,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:15:06,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:15:06,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:06,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:15:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:15:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:15:06,343 INFO L87 Difference]: Start difference. First operand 7085 states and 11755 transitions. Second operand 6 states. [2018-10-27 11:15:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:17,937 INFO L93 Difference]: Finished difference Result 25970 states and 44847 transitions. [2018-10-27 11:15:17,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:15:17,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 11:15:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:18,030 INFO L225 Difference]: With dead ends: 25970 [2018-10-27 11:15:18,030 INFO L226 Difference]: Without dead ends: 18891 [2018-10-27 11:15:18,079 INFO L605 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 [2018-10-27 11:15:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18891 states. [2018-10-27 11:15:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18891 to 18789. [2018-10-27 11:15:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18789 states. [2018-10-27 11:15:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 28878 transitions. [2018-10-27 11:15:18,572 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 28878 transitions. Word has length 125 [2018-10-27 11:15:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:18,572 INFO L481 AbstractCegarLoop]: Abstraction has 18789 states and 28878 transitions. [2018-10-27 11:15:18,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:15:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 28878 transitions. [2018-10-27 11:15:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-27 11:15:18,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:18,596 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:15:18,596 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:18,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash -284671976, now seen corresponding path program 1 times [2018-10-27 11:15:18,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:18,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:18,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:18,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:18,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 11:15:19,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:15:19,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:15:19,063 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-27 11:15:19,065 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1943], [1945], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 11:15:19,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:15:19,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:15:20,162 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 11:15:20,163 INFO L272 AbstractInterpreter]: Visited 157 different actions 306 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 11:15:20,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:20,210 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 11:15:20,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:15:20,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 11:15:20,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:20,225 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 11:15:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:20,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 11:15:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 11:15:20,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 11:15:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 11:15:21,483 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:15:21,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2018-10-27 11:15:21,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:21,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:15:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:15:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-27 11:15:21,487 INFO L87 Difference]: Start difference. First operand 18789 states and 28878 transitions. Second operand 5 states. [2018-10-27 11:15:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:37,134 INFO L93 Difference]: Finished difference Result 63782 states and 102144 transitions. [2018-10-27 11:15:37,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 11:15:37,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2018-10-27 11:15:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:37,354 INFO L225 Difference]: With dead ends: 63782 [2018-10-27 11:15:37,354 INFO L226 Difference]: Without dead ends: 44999 [2018-10-27 11:15:37,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 488 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-27 11:15:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44999 states. [2018-10-27 11:15:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44999 to 44818. [2018-10-27 11:15:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44818 states. [2018-10-27 11:15:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44818 states to 44818 states and 62944 transitions. [2018-10-27 11:15:39,117 INFO L78 Accepts]: Start accepts. Automaton has 44818 states and 62944 transitions. Word has length 246 [2018-10-27 11:15:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:39,118 INFO L481 AbstractCegarLoop]: Abstraction has 44818 states and 62944 transitions. [2018-10-27 11:15:39,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:15:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 44818 states and 62944 transitions. [2018-10-27 11:15:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-27 11:15:39,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:39,145 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:15:39,145 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:39,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash 669260836, now seen corresponding path program 1 times [2018-10-27 11:15:39,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:39,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:39,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:39,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:15:39,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:15:39,539 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:15:39,539 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-27 11:15:39,543 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1943], [1945], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2424], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 11:15:39,562 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:15:39,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:15:39,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:15:39,789 INFO L272 AbstractInterpreter]: Visited 153 different actions 153 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 11:15:39,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:39,827 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:15:40,379 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 75.04% of their original sizes. [2018-10-27 11:15:40,380 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:15:40,886 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-10-27 11:15:40,887 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:15:40,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:15:40,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 11:15:40,888 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:40,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 11:15:40,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 11:15:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:15:40,889 INFO L87 Difference]: Start difference. First operand 44818 states and 62944 transitions. Second operand 8 states. [2018-10-27 11:15:44,361 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 11:18:21,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 11:18:21,961 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 11:18:21,966 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 11:18:21,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 11:18:21 BoogieIcfgContainer [2018-10-27 11:18:21,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 11:18:21,967 INFO L168 Benchmark]: Toolchain (without parser) took 243154.46 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 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 480.3 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,968 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 11:18:21,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2145.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 452.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,971 INFO L168 Benchmark]: Boogie Preprocessor took 312.00 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: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,971 INFO L168 Benchmark]: RCFGBuilder took 11427.92 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -181.3 MB). Peak memory consumption was 667.6 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,972 INFO L168 Benchmark]: TraceAbstraction took 228810.71 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 484.9 MB. Max. memory is 7.1 GB. [2018-10-27 11:18:21,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2145.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 452.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 312.00 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: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11427.92 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -181.3 MB). Peak memory consumption was 667.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228810.71 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 484.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was constructing difference of abstraction (44818states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (15422 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 228.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 219.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2320 SDtfs, 13123 SDslu, 793 SDs, 0 SdLazy, 25298 SolverSat, 5981 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 788 GetRequests, 746 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44818occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9979817355137051 AbsIntWeakeningRatio, 0.10588235294117647 AbsIntAvgWeakeningVarsNumRemoved, 19.184313725490195 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 310 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1089 NumberOfCodeBlocks, 1089 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120865 SizeOfPredicates, 2 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 331/479 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown