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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:55:52,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:55:52,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:55:52,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:55:52,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:55:52,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:55:52,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:55:52,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:55:52,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:55:52,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:55:52,748 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:55:52,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:55:52,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:55:52,750 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:55:52,752 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:55:52,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:55:52,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:55:52,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:55:52,758 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:55:52,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:55:52,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:55:52,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:55:52,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:55:52,765 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:55:52,765 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:55:52,766 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:55:52,767 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:55:52,768 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:55:52,769 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:55:52,771 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:55:52,771 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:55:52,772 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:55:52,772 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:55:52,772 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:55:52,773 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:55:52,774 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:55:52,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:55:52,792 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:55:52,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:55:52,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:55:52,793 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:55:52,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:55:52,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:55:52,794 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:55:52,794 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:55:52,795 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:55:52,795 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:55:52,795 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:55:52,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:55:52,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:55:52,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:55:52,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:55:52,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:55:52,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:55:52,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:55:52,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:55:52,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:55:52,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:55:52,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:55:52,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:55:52,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:55:52,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:55:52,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:55:52,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:55:52,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:55:52,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:55:52,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:55:52,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:55:52,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:55:52,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:55:52,801 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:55:52,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:55:52,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:55:52,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:55:52,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:55:52,881 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:55:52,881 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:55:52,882 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-11-12 18:55:52,958 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4262f9267/98ff9b6de0f246668810ea70280a54b6/FLAG37a2e2478 [2018-11-12 18:55:53,822 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:55:53,824 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-11-12 18:55:53,861 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4262f9267/98ff9b6de0f246668810ea70280a54b6/FLAG37a2e2478 [2018-11-12 18:55:53,876 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4262f9267/98ff9b6de0f246668810ea70280a54b6 [2018-11-12 18:55:53,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:55:53,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:55:53,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:55:53,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:55:53,904 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:55:53,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:55:53" (1/1) ... [2018-11-12 18:55:53,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d32a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:53, skipping insertion in model container [2018-11-12 18:55:53,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:55:53" (1/1) ... [2018-11-12 18:55:53,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:55:54,102 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:55:55,512 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:55:55,518 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:55:56,245 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:55:56,280 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:55:56,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56 WrapperNode [2018-11-12 18:55:56,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:55:56,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:55:56,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:55:56,283 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:55:56,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:55:56,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:55:56,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:55:56,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:55:56,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (1/1) ... [2018-11-12 18:55:56,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:55:56,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:55:56,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:55:56,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:55:56,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (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 [2018-11-12 18:55:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:55:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:55:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:55:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:55:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:55:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:55:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:55:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:55:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:55:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:55:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:55:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:55:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:55:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:55:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:56:07,071 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:56:07,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:56:07 BoogieIcfgContainer [2018-11-12 18:56:07,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:56:07,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:56:07,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:56:07,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:56:07,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:55:53" (1/3) ... [2018-11-12 18:56:07,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20743006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:56:07, skipping insertion in model container [2018-11-12 18:56:07,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:55:56" (2/3) ... [2018-11-12 18:56:07,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20743006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:56:07, skipping insertion in model container [2018-11-12 18:56:07,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:56:07" (3/3) ... [2018-11-12 18:56:07,082 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label17_true-unreach-call.c [2018-11-12 18:56:07,093 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:56:07,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:56:07,121 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:56:07,171 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:56:07,171 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:56:07,171 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:56:07,172 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:56:07,172 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:56:07,172 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:56:07,172 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:56:07,172 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:56:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 18:56:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-12 18:56:07,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:07,234 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:07,237 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:07,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1075822924, now seen corresponding path program 1 times [2018-11-12 18:56:07,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:07,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:07,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:07,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:07,292 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:07,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:07,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:56:07,769 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:07,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:56:07,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:56:07,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:56:07,801 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 18:56:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:16,916 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-12 18:56:16,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:56:16,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-12 18:56:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:16,951 INFO L225 Difference]: With dead ends: 3087 [2018-11-12 18:56:16,952 INFO L226 Difference]: Without dead ends: 1965 [2018-11-12 18:56:16,962 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 [2018-11-12 18:56:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-12 18:56:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-12 18:56:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-12 18:56:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-12 18:56:17,129 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 40 [2018-11-12 18:56:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:17,130 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-12 18:56:17,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:56:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-12 18:56:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-12 18:56:17,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:17,138 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:17,138 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:17,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1534967006, now seen corresponding path program 1 times [2018-11-12 18:56:17,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:17,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:17,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:17,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:17,143 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:17,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:17,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:56:17,539 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:17,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:56:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:56:17,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:56:17,542 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-12 18:56:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:28,670 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-12 18:56:28,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:56:28,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-12 18:56:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:28,698 INFO L225 Difference]: With dead ends: 5634 [2018-11-12 18:56:28,699 INFO L226 Difference]: Without dead ends: 3681 [2018-11-12 18:56:28,706 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 [2018-11-12 18:56:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-12 18:56:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-12 18:56:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-12 18:56:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-12 18:56:28,817 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 117 [2018-11-12 18:56:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:28,817 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-12 18:56:28,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:56:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-12 18:56:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-12 18:56:28,823 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:28,823 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:28,824 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:28,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:28,824 INFO L82 PathProgramCache]: Analyzing trace with hash -378735212, now seen corresponding path program 1 times [2018-11-12 18:56:28,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:28,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:28,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:28,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:28,826 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:29,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:29,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:56:29,083 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:29,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:56:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:56:29,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:56:29,085 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-12 18:56:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:39,547 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-11-12 18:56:39,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:56:39,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-12 18:56:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:39,607 INFO L225 Difference]: With dead ends: 12385 [2018-11-12 18:56:39,608 INFO L226 Difference]: Without dead ends: 8741 [2018-11-12 18:56:39,631 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 [2018-11-12 18:56:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-11-12 18:56:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-11-12 18:56:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-11-12 18:56:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-11-12 18:56:39,875 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 136 [2018-11-12 18:56:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:39,875 INFO L480 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-11-12 18:56:39,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:56:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-11-12 18:56:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-12 18:56:39,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:39,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:39,882 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:39,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 279720828, now seen corresponding path program 1 times [2018-11-12 18:56:39,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:39,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:39,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:39,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:39,884 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:40,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:40,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:56:40,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:40,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:56:40,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:56:40,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:56:40,168 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-11-12 18:56:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:50,586 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-11-12 18:56:50,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:56:50,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-12 18:56:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:50,671 INFO L225 Difference]: With dead ends: 22909 [2018-11-12 18:56:50,671 INFO L226 Difference]: Without dead ends: 14231 [2018-11-12 18:56:50,713 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 [2018-11-12 18:56:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-11-12 18:56:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-11-12 18:56:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-11-12 18:56:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-11-12 18:56:51,062 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 148 [2018-11-12 18:56:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:51,063 INFO L480 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-11-12 18:56:51,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:56:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-11-12 18:56:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-12 18:56:51,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:51,071 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:56:51,071 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:51,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash 407433476, now seen corresponding path program 1 times [2018-11-12 18:56:51,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:51,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:51,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:51,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:51,073 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 66 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:56:51,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:56:51,423 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:56:51,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-12 18:56:51,427 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2847], [2849], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:56:51,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:56:51,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:56:52,348 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:56:52,350 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Performed 2148 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2148 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 18:56:52,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:52,400 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:56:53,493 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 71.43% of their original sizes. [2018-11-12 18:56:53,493 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:56:54,241 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-12 18:56:54,241 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:56:54,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:56:54,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 18:56:54,243 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:54,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:56:54,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:56:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:56:54,244 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-11-12 18:57:06,121 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:58:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:58:11,551 INFO L93 Difference]: Finished difference Result 28917 states and 40934 transitions. [2018-11-12 18:58:11,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 18:58:11,551 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 212 [2018-11-12 18:58:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:58:11,600 INFO L225 Difference]: With dead ends: 28917 [2018-11-12 18:58:11,601 INFO L226 Difference]: Without dead ends: 14866 [2018-11-12 18:58:11,635 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 18:58:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14866 states. [2018-11-12 18:58:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14866 to 14861. [2018-11-12 18:58:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14861 states. [2018-11-12 18:58:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14861 states to 14861 states and 20774 transitions. [2018-11-12 18:58:11,945 INFO L78 Accepts]: Start accepts. Automaton has 14861 states and 20774 transitions. Word has length 212 [2018-11-12 18:58:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:58:11,946 INFO L480 AbstractCegarLoop]: Abstraction has 14861 states and 20774 transitions. [2018-11-12 18:58:11,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:58:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14861 states and 20774 transitions. [2018-11-12 18:58:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-12 18:58:11,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:58:11,953 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:58:11,953 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:58:11,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:58:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1563120433, now seen corresponding path program 1 times [2018-11-12 18:58:11,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:58:11,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:58:11,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:58:11,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:58:11,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:58:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:58:12,342 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:58:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 61 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:58:13,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:58:13,211 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:58:13,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-12 18:58:13,212 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2847], [2849], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:58:13,218 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:58:13,218 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:58:14,993 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:58:14,994 INFO L272 AbstractInterpreter]: Visited 138 different actions 402 times. Merged at 5 different actions 10 times. Never widened. Performed 7175 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7175 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:58:15,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:58:15,033 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:58:15,616 INFO L227 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 71.08% of their original sizes. [2018-11-12 18:58:15,616 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:58:16,396 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-12 18:58:16,396 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:58:16,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:58:16,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-12 18:58:16,397 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:58:16,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:58:16,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:58:16,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:58:16,399 INFO L87 Difference]: Start difference. First operand 14861 states and 20774 transitions. Second operand 10 states. [2018-11-12 18:58:22,110 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 18:59:19,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 18:59:19,021 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:59:19,028 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:59:19,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:59:19 BoogieIcfgContainer [2018-11-12 18:59:19,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:59:19,031 INFO L168 Benchmark]: Toolchain (without parser) took 205140.52 ms. Allocated memory was 1.5 GB in the beginning and 6.5 GB in the end (delta: 4.9 GB). Free memory was 1.4 GB in the beginning and 4.7 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,032 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-11-12 18:59:19,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2388.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,034 INFO L168 Benchmark]: Boogie Preprocessor took 259.68 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,037 INFO L168 Benchmark]: RCFGBuilder took 10138.55 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -4.3 MB). Peak memory consumption was 681.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,039 INFO L168 Benchmark]: TraceAbstraction took 191955.50 ms. Allocated memory was 2.5 GB in the beginning and 6.5 GB in the end (delta: 4.0 GB). Free memory was 2.2 GB in the beginning and 4.7 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 18:59:19,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 2388.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 392.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.68 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10138.55 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 175.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -4.3 MB). Peak memory consumption was 681.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191955.50 ms. Allocated memory was 2.5 GB in the beginning and 6.5 GB in the end (delta: 4.0 GB). Free memory was 2.2 GB in the beginning and 4.7 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (14861states) and FLOYD_HOARE automaton (currently 14 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (19195 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 191.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3963 SDtfs, 19934 SDslu, 3436 SDs, 0 SdLazy, 31787 SolverSat, 6792 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 523 GetRequests, 469 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14861occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9975014393109022 AbsIntWeakeningRatio, 0.1134453781512605 AbsIntAvgWeakeningVarsNumRemoved, 12.159663865546218 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 273 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 919 NumberOfCodeBlocks, 919 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 913 ConstructedInterpolants, 0 QuantifiedInterpolants, 684907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 231/403 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown