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/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:48:11,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:48:11,752 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:48:11,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:48:11,765 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:48:11,766 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:48:11,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:48:11,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:48:11,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:48:11,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:48:11,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:48:11,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:48:11,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:48:11,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:48:11,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:48:11,787 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:48:11,792 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:48:11,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:48:11,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:48:11,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:48:11,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:48:11,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:48:11,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:48:11,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:48:11,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:48:11,813 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:48:11,816 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:48:11,817 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:48:11,818 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:48:11,818 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:48:11,818 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:48:11,821 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:48:11,821 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:48:11,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:48:11,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:48:11,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:48:11,823 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 18:48:11,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:48:11,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:48:11,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:48:11,855 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:48:11,856 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:48:11,856 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:48:11,856 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:48:11,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:48:11,857 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:48:11,857 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:48:11,857 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:48:11,857 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:48:11,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:48:11,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:48:11,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:48:11,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:48:11,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:48:11,859 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:48:11,859 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:48:11,859 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:48:11,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:48:11,861 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:48:11,861 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:48:11,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:48:11,862 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:48:11,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:48:11,862 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:48:11,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:48:11,862 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:48:11,863 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:48:11,863 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:48:11,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:48:11,863 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:48:11,863 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:48:11,864 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:48:11,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:48:11,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:48:11,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:48:11,954 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:48:11,954 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:48:11,954 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-12 18:48:12,015 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88112978b/e616b60c50d849ca96d8c433e9ec7273/FLAG05e1438ce [2018-11-12 18:48:12,703 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:48:12,704 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-12 18:48:12,739 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88112978b/e616b60c50d849ca96d8c433e9ec7273/FLAG05e1438ce [2018-11-12 18:48:12,760 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88112978b/e616b60c50d849ca96d8c433e9ec7273 [2018-11-12 18:48:12,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:48:12,776 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:48:12,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:48:12,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:48:12,781 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:48:12,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:48:12" (1/1) ... [2018-11-12 18:48:12,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c173f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:12, skipping insertion in model container [2018-11-12 18:48:12,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:48:12" (1/1) ... [2018-11-12 18:48:12,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:48:12,979 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:48:14,354 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:48:14,359 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:48:14,954 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:48:14,987 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:48:14,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14 WrapperNode [2018-11-12 18:48:14,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:48:14,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:48:14,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:48:14,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:48:15,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:48:15,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:48:15,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:48:15,331 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:48:15,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (1/1) ... [2018-11-12 18:48:15,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:48:15,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:48:15,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:48:15,554 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:48:15,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (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 18:48:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:48:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:48:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:48:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:48:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:48:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:48:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:48:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:48:15,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:48:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:48:15,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:48:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:48:15,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:48:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:48:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:48:24,583 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:48:24,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:48:24 BoogieIcfgContainer [2018-11-12 18:48:24,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:48:24,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:48:24,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:48:24,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:48:24,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:48:12" (1/3) ... [2018-11-12 18:48:24,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7883f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:48:24, skipping insertion in model container [2018-11-12 18:48:24,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:14" (2/3) ... [2018-11-12 18:48:24,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7883f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:48:24, skipping insertion in model container [2018-11-12 18:48:24,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:48:24" (3/3) ... [2018-11-12 18:48:24,593 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-11-12 18:48:24,604 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:48:24,614 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:48:24,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:48:24,680 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:48:24,680 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:48:24,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:48:24,681 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:48:24,681 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:48:24,681 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:48:24,681 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:48:24,681 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:48:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 18:48:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-12 18:48:24,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:48:24,730 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] [2018-11-12 18:48:24,732 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:48:24,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1410046180, now seen corresponding path program 1 times [2018-11-12 18:48:24,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:48:24,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:24,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:48:24,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:24,789 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:48:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:48:25,205 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:48:25,339 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 18:48:25,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:48:25,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:48:25,344 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:48:25,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:48:25,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:48:25,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:48:25,369 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-12 18:48:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:48:32,154 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-12 18:48:32,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:48:32,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-12 18:48:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:48:32,190 INFO L225 Difference]: With dead ends: 2446 [2018-11-12 18:48:32,191 INFO L226 Difference]: Without dead ends: 1604 [2018-11-12 18:48:32,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:48:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-12 18:48:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-12 18:48:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-12 18:48:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-11-12 18:48:32,370 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 38 [2018-11-12 18:48:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:48:32,371 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-11-12 18:48:32,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:48:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-11-12 18:48:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-12 18:48:32,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:48:32,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:32,380 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:48:32,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -552195830, now seen corresponding path program 1 times [2018-11-12 18:48:32,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:48:32,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:32,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:48:32,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:32,383 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:48:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:48:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:48:32,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:48:32,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:48:32,646 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:48:32,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:48:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:48:32,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:48:32,650 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-11-12 18:48:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:48:42,053 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-11-12 18:48:42,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:48:42,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-11-12 18:48:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:48:42,073 INFO L225 Difference]: With dead ends: 4038 [2018-11-12 18:48:42,073 INFO L226 Difference]: Without dead ends: 2440 [2018-11-12 18:48:42,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:48:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-11-12 18:48:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-11-12 18:48:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-11-12 18:48:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-11-12 18:48:42,159 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 112 [2018-11-12 18:48:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:48:42,160 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-11-12 18:48:42,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:48:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-11-12 18:48:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 18:48:42,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:48:42,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:42,168 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:48:42,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1294703450, now seen corresponding path program 1 times [2018-11-12 18:48:42,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:48:42,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:42,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:48:42,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:42,175 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:48:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:48:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:48:42,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:48:42,670 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:48:42,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-11-12 18:48:42,673 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2071], [2073], [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], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:48:42,719 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:48:42,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:48:43,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:48:43,648 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Performed 1609 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1609 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 18:48:43,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:43,693 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:48:44,117 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 75.6% of their original sizes. [2018-11-12 18:48:44,118 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:48:44,662 INFO L415 sIntCurrentIteration]: We unified 113 AI predicates to 113 [2018-11-12 18:48:44,662 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:48:44,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:48:44,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 18:48:44,665 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:48:44,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:48:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:48:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:48:44,666 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 11 states. [2018-11-12 18:48:52,104 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:49:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:50,695 INFO L93 Difference]: Finished difference Result 7130 states and 12346 transitions. [2018-11-12 18:49:50,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 18:49:50,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2018-11-12 18:49:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:50,718 INFO L225 Difference]: With dead ends: 7130 [2018-11-12 18:49:50,718 INFO L226 Difference]: Without dead ends: 4723 [2018-11-12 18:49:50,727 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:49:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-11-12 18:49:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4720. [2018-11-12 18:49:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2018-11-12 18:49:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6479 transitions. [2018-11-12 18:49:50,846 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6479 transitions. Word has length 114 [2018-11-12 18:49:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:50,847 INFO L480 AbstractCegarLoop]: Abstraction has 4720 states and 6479 transitions. [2018-11-12 18:49:50,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:49:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6479 transitions. [2018-11-12 18:49:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-12 18:49:50,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:50,853 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:49:50,853 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:50,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:50,854 INFO L82 PathProgramCache]: Analyzing trace with hash -105372228, now seen corresponding path program 1 times [2018-11-12 18:49:50,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:50,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:50,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:50,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:50,855 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 104 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:49:51,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:49:51,692 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:49:51,693 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-11-12 18:49:51,693 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2071], [2073], [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], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:49:51,703 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:49:51,704 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:49:51,936 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:49:52,252 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:49:52,253 INFO L272 AbstractInterpreter]: Visited 155 different actions 460 times. Merged at 7 different actions 19 times. Never widened. Performed 5899 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5899 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 18:49:52,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:52,285 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:49:52,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:49:52,285 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:49:52,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:52,295 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:49:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:52,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:49:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 18:49:52,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:49:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 18:49:53,184 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:49:53,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-11-12 18:49:53,184 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:49:53,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:49:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:49:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:49:53,187 INFO L87 Difference]: Start difference. First operand 4720 states and 6479 transitions. Second operand 3 states. [2018-11-12 18:49:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:58,751 INFO L93 Difference]: Finished difference Result 9469 states and 14833 transitions. [2018-11-12 18:49:58,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:49:58,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-11-12 18:49:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:58,797 INFO L225 Difference]: With dead ends: 9469 [2018-11-12 18:49:58,798 INFO L226 Difference]: Without dead ends: 7062 [2018-11-12 18:49:58,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 520 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:49:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2018-11-12 18:49:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7062. [2018-11-12 18:49:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2018-11-12 18:49:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 9466 transitions. [2018-11-12 18:49:58,973 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 9466 transitions. Word has length 260 [2018-11-12 18:49:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:58,974 INFO L480 AbstractCegarLoop]: Abstraction has 7062 states and 9466 transitions. [2018-11-12 18:49:58,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:49:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 9466 transitions. [2018-11-12 18:49:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-12 18:49:58,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:58,979 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:49:58,980 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:58,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash 46370913, now seen corresponding path program 1 times [2018-11-12 18:49:58,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:58,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:58,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:58,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:58,982 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:49:59,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:49:59,526 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:49:59,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-12 18:49:59,527 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2071], [2073], [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], [2388], [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], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:49:59,542 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:49:59,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:49:59,690 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:49:59,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:49:59,880 INFO L272 AbstractInterpreter]: Visited 154 different actions 302 times. Merged at 5 different actions 5 times. Never widened. Performed 4048 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4048 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 18:49:59,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:59,884 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:50:00,417 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.39% of their original sizes. [2018-11-12 18:50:00,417 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:50:00,986 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-12 18:50:00,986 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:50:00,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:50:00,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 18:50:00,987 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:50:00,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 18:50:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 18:50:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:50:00,989 INFO L87 Difference]: Start difference. First operand 7062 states and 9466 transitions. Second operand 20 states. Received shutdown request... [2018-11-12 18:51:47,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 18:51:47,297 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:51:47,302 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:51:47,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:51:47 BoogieIcfgContainer [2018-11-12 18:51:47,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:51:47,303 INFO L168 Benchmark]: Toolchain (without parser) took 214528.87 ms. Allocated memory was 1.5 GB in the beginning and 7.2 GB in the end (delta: 5.7 GB). Free memory was 1.4 GB in the beginning and 4.6 GB in the end (delta: -3.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,305 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:51:47,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2211.18 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 341.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,307 INFO L168 Benchmark]: Boogie Preprocessor took 222.49 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,308 INFO L168 Benchmark]: RCFGBuilder took 9030.70 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -155.2 MB). Peak memory consumption was 662.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,309 INFO L168 Benchmark]: TraceAbstraction took 202716.79 ms. Allocated memory was 2.5 GB in the beginning and 7.2 GB in the end (delta: 4.7 GB). Free memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 18:51:47,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2211.18 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 341.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.49 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9030.70 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -155.2 MB). Peak memory consumption was 662.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202716.79 ms. Allocated memory was 2.5 GB in the beginning and 7.2 GB in the end (delta: 4.7 GB). Free memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (7062states) and FLOYD_HOARE automaton (currently 20 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (11057 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 194.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2747 SDtfs, 12575 SDslu, 1367 SDs, 0 SdLazy, 30974 SolverSat, 4503 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 939 GetRequests, 870 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7062occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.997077836295111 AbsIntWeakeningRatio, 0.128686327077748 AbsIntAvgWeakeningVarsNumRemoved, 20.86058981233244 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1045 NumberOfCodeBlocks, 1045 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1298 ConstructedInterpolants, 0 QuantifiedInterpolants, 1329079 SizeOfPredicates, 2 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 563/615 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown