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/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:35:55,668 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:35:55,670 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:35:55,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:35:55,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:35:55,688 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:35:55,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:35:55,695 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:35:55,701 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:35:55,702 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:35:55,708 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:35:55,709 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:35:55,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:35:55,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:35:55,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:35:55,714 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:35:55,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:35:55,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:35:55,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:35:55,724 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:35:55,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:35:55,728 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:35:55,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:35:55,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:35:55,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:35:55,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:35:55,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:35:55,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:35:55,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:35:55,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:35:55,743 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:35:55,744 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:35:55,744 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:35:55,744 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:35:55,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:35:55,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:35:55,747 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 18:35:55,777 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:35:55,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:35:55,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:35:55,779 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:35:55,779 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:35:55,779 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:35:55,780 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:35:55,781 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:35:55,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:35:55,782 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:35:55,782 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:35:55,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:35:55,783 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:35:55,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:35:55,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:35:55,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:35:55,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:35:55,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:35:55,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:35:55,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:35:55,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:35:55,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:35:55,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:35:55,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:35:55,786 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:35:55,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:35:55,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:35:55,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:35:55,787 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:35:55,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:35:55,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:35:55,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:35:55,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:35:55,855 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:35:55,855 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:35:55,856 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-12 18:35:55,914 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931ee065f/7a25d0fff6424b86b74681ee82a3866f/FLAG3293ca80b [2018-11-12 18:35:56,523 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:35:56,524 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-12 18:35:56,543 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931ee065f/7a25d0fff6424b86b74681ee82a3866f/FLAG3293ca80b [2018-11-12 18:35:56,560 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931ee065f/7a25d0fff6424b86b74681ee82a3866f [2018-11-12 18:35:56,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:35:56,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:35:56,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:56,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:35:56,578 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:35:56,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:56" (1/1) ... [2018-11-12 18:35:56,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c06a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:56, skipping insertion in model container [2018-11-12 18:35:56,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:56" (1/1) ... [2018-11-12 18:35:56,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:35:56,689 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:35:57,254 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:57,259 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:35:57,441 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:57,461 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:35:57,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57 WrapperNode [2018-11-12 18:35:57,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:57,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:57,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:35:57,463 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:35:57,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:57,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:35:57,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:35:57,634 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:35:57,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (1/1) ... [2018-11-12 18:35:57,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:35:57,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:35:57,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:35:57,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:35:57,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (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 18:35:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:35:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:35:57,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:35:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:35:57,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:35:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:35:57,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:35:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:35:57,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:36:02,674 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:36:02,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:36:02 BoogieIcfgContainer [2018-11-12 18:36:02,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:36:02,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:36:02,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:36:02,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:36:02,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:35:56" (1/3) ... [2018-11-12 18:36:02,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a1a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:36:02, skipping insertion in model container [2018-11-12 18:36:02,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:57" (2/3) ... [2018-11-12 18:36:02,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a1a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:36:02, skipping insertion in model container [2018-11-12 18:36:02,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:36:02" (3/3) ... [2018-11-12 18:36:02,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-11-12 18:36:02,695 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:36:02,705 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:36:02,723 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:36:02,764 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:36:02,764 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:36:02,764 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:36:02,765 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:36:02,765 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:36:02,765 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:36:02,765 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:36:02,765 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:36:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:36:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-12 18:36:02,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:02,814 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:02,816 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:02,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-11-12 18:36:02,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:02,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:02,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:02,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:02,876 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:03,324 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 18:36:03,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:03,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:36:03,327 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:03,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:36:03,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:36:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:03,353 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 18:36:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:06,959 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-12 18:36:06,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:36:06,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-12 18:36:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:06,986 INFO L225 Difference]: With dead ends: 985 [2018-11-12 18:36:06,987 INFO L226 Difference]: Without dead ends: 686 [2018-11-12 18:36:06,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-12 18:36:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-12 18:36:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-12 18:36:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-12 18:36:07,103 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-11-12 18:36:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:07,104 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-12 18:36:07,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:36:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-12 18:36:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-12 18:36:07,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:07,113 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:07,113 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:07,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-11-12 18:36:07,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:07,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:07,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:07,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:07,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:07,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:07,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:36:07,834 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:07,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:36:07,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:36:07,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:36:07,838 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-12 18:36:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:13,458 INFO L93 Difference]: Finished difference Result 2339 states and 3734 transitions. [2018-11-12 18:36:13,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:36:13,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-12 18:36:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:13,477 INFO L225 Difference]: With dead ends: 2339 [2018-11-12 18:36:13,477 INFO L226 Difference]: Without dead ends: 1659 [2018-11-12 18:36:13,483 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:36:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-12 18:36:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-12 18:36:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-12 18:36:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2354 transitions. [2018-11-12 18:36:13,585 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2354 transitions. Word has length 131 [2018-11-12 18:36:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:13,586 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2354 transitions. [2018-11-12 18:36:13,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:36:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2354 transitions. [2018-11-12 18:36:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-12 18:36:13,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:13,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:13,603 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:13,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-11-12 18:36:13,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:13,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:13,605 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:13,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:13,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:36:13,933 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:13,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:36:13,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:36:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:13,938 INFO L87 Difference]: Start difference. First operand 1642 states and 2354 transitions. Second operand 4 states. [2018-11-12 18:36:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:16,722 INFO L93 Difference]: Finished difference Result 6013 states and 9018 transitions. [2018-11-12 18:36:16,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:36:16,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-11-12 18:36:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:16,761 INFO L225 Difference]: With dead ends: 6013 [2018-11-12 18:36:16,761 INFO L226 Difference]: Without dead ends: 4377 [2018-11-12 18:36:16,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-11-12 18:36:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-11-12 18:36:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-11-12 18:36:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6078 transitions. [2018-11-12 18:36:16,926 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6078 transitions. Word has length 182 [2018-11-12 18:36:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:16,927 INFO L480 AbstractCegarLoop]: Abstraction has 4354 states and 6078 transitions. [2018-11-12 18:36:16,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:36:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6078 transitions. [2018-11-12 18:36:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-12 18:36:16,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:16,940 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:36:16,940 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:16,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-11-12 18:36:16,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:16,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:16,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:16,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:16,942 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:17,202 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:36:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:36:17,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:17,646 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:17,648 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-12 18:36:17,655 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:17,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:17,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:18,447 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:18,449 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Performed 1173 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1173 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 18:36:18,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:18,495 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:19,229 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.51% of their original sizes. [2018-11-12 18:36:19,229 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:19,594 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-12 18:36:19,594 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:19,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:19,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 18:36:19,595 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:19,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:36:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:36:19,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:36:19,597 INFO L87 Difference]: Start difference. First operand 4354 states and 6078 transitions. Second operand 7 states. [2018-11-12 18:36:22,509 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:31,798 INFO L93 Difference]: Finished difference Result 8894 states and 12374 transitions. [2018-11-12 18:36:31,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:36:31,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-11-12 18:36:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:31,827 INFO L225 Difference]: With dead ends: 8894 [2018-11-12 18:36:31,827 INFO L226 Difference]: Without dead ends: 4546 [2018-11-12 18:36:31,846 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:36:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-11-12 18:36:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-11-12 18:36:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-11-12 18:36:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6278 transitions. [2018-11-12 18:36:31,981 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6278 transitions. Word has length 226 [2018-11-12 18:36:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:31,982 INFO L480 AbstractCegarLoop]: Abstraction has 4544 states and 6278 transitions. [2018-11-12 18:36:31,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:36:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6278 transitions. [2018-11-12 18:36:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-12 18:36:31,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:31,998 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:36:31,998 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:31,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:31,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-11-12 18:36:31,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:32,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:32,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:32,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:32,001 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-12 18:36:32,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:32,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:36:32,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:32,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:36:32,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:36:32,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:36:32,354 INFO L87 Difference]: Start difference. First operand 4544 states and 6278 transitions. Second operand 3 states. [2018-11-12 18:36:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:36,831 INFO L93 Difference]: Finished difference Result 10605 states and 15140 transitions. [2018-11-12 18:36:36,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:36:36,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-11-12 18:36:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:36,871 INFO L225 Difference]: With dead ends: 10605 [2018-11-12 18:36:36,871 INFO L226 Difference]: Without dead ends: 6257 [2018-11-12 18:36:36,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:36:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-11-12 18:36:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6257. [2018-11-12 18:36:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6257 states. [2018-11-12 18:36:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6257 states to 6257 states and 8403 transitions. [2018-11-12 18:36:37,045 INFO L78 Accepts]: Start accepts. Automaton has 6257 states and 8403 transitions. Word has length 320 [2018-11-12 18:36:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:37,045 INFO L480 AbstractCegarLoop]: Abstraction has 6257 states and 8403 transitions. [2018-11-12 18:36:37,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:36:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6257 states and 8403 transitions. [2018-11-12 18:36:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-12 18:36:37,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:37,064 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:37,064 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:37,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:37,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-11-12 18:36:37,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:37,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:37,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:37,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:37,066 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:36:37,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:37,590 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:37,591 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-12 18:36:37,591 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:37,597 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:37,597 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:37,694 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:37,984 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:37,985 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Performed 3029 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3029 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:36:38,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:38,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:38,733 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 73.4% of their original sizes. [2018-11-12 18:36:38,733 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:39,681 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-12 18:36:39,681 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:39,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:39,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:36:39,685 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:39,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:39,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:39,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:36:39,687 INFO L87 Difference]: Start difference. First operand 6257 states and 8403 transitions. Second operand 11 states. [2018-11-12 18:36:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:52,051 INFO L93 Difference]: Finished difference Result 12513 states and 16837 transitions. [2018-11-12 18:36:52,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:36:52,051 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 353 [2018-11-12 18:36:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:52,090 INFO L225 Difference]: With dead ends: 12513 [2018-11-12 18:36:52,091 INFO L226 Difference]: Without dead ends: 6452 [2018-11-12 18:36:52,116 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 361 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:36:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2018-11-12 18:36:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6448. [2018-11-12 18:36:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6448 states. [2018-11-12 18:36:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6448 states to 6448 states and 8614 transitions. [2018-11-12 18:36:52,273 INFO L78 Accepts]: Start accepts. Automaton has 6448 states and 8614 transitions. Word has length 353 [2018-11-12 18:36:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:52,273 INFO L480 AbstractCegarLoop]: Abstraction has 6448 states and 8614 transitions. [2018-11-12 18:36:52,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6448 states and 8614 transitions. [2018-11-12 18:36:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-12 18:36:52,293 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:52,293 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:52,293 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:52,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2033122385, now seen corresponding path program 1 times [2018-11-12 18:36:52,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:52,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:52,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:52,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:52,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:36:52,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:52,921 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:52,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-12 18:36:52,922 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:52,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:52,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:53,069 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:53,409 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:53,409 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 6497 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6497 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:36:53,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:53,416 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:53,958 INFO L227 lantSequenceWeakener]: Weakened 360 states. On average, predicates are now at 73.39% of their original sizes. [2018-11-12 18:36:53,959 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:54,454 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-12 18:36:54,454 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:54,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:54,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:36:54,454 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:54,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:54,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:36:54,456 INFO L87 Difference]: Start difference. First operand 6448 states and 8614 transitions. Second operand 11 states. [2018-11-12 18:37:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:14,036 INFO L93 Difference]: Finished difference Result 13097 states and 17561 transitions. [2018-11-12 18:37:14,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:37:14,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 363 [2018-11-12 18:37:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:14,071 INFO L225 Difference]: With dead ends: 13097 [2018-11-12 18:37:14,071 INFO L226 Difference]: Without dead ends: 7036 [2018-11-12 18:37:14,087 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 372 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:37:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2018-11-12 18:37:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 7026. [2018-11-12 18:37:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7026 states. [2018-11-12 18:37:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 9285 transitions. [2018-11-12 18:37:14,247 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 9285 transitions. Word has length 363 [2018-11-12 18:37:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:14,248 INFO L480 AbstractCegarLoop]: Abstraction has 7026 states and 9285 transitions. [2018-11-12 18:37:14,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:37:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 9285 transitions. [2018-11-12 18:37:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-11-12 18:37:14,270 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:14,271 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:14,271 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:14,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:14,272 INFO L82 PathProgramCache]: Analyzing trace with hash 139923236, now seen corresponding path program 1 times [2018-11-12 18:37:14,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:14,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:14,273 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-12 18:37:14,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:14,980 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:14,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-11-12 18:37:14,981 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:14,992 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:14,992 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:15,122 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:17,938 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:17,938 INFO L272 AbstractInterpreter]: Visited 142 different actions 843 times. Merged at 8 different actions 49 times. Widened at 1 different actions 1 times. Performed 13929 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13929 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:37:17,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:17,949 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:17,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:17,949 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 18:37:17,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:17,961 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:18,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-12 18:37:18,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-12 18:37:18,710 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:37:18,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-12 18:37:18,711 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:18,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:37:18,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:37:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:37:18,712 INFO L87 Difference]: Start difference. First operand 7026 states and 9285 transitions. Second operand 3 states. [2018-11-12 18:37:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:20,422 INFO L93 Difference]: Finished difference Result 17803 states and 24487 transitions. [2018-11-12 18:37:20,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:37:20,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2018-11-12 18:37:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:20,470 INFO L225 Difference]: With dead ends: 17803 [2018-11-12 18:37:20,471 INFO L226 Difference]: Without dead ends: 11163 [2018-11-12 18:37:20,490 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:37:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2018-11-12 18:37:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 10970. [2018-11-12 18:37:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10970 states. [2018-11-12 18:37:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 14595 transitions. [2018-11-12 18:37:20,768 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 14595 transitions. Word has length 365 [2018-11-12 18:37:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:20,769 INFO L480 AbstractCegarLoop]: Abstraction has 10970 states and 14595 transitions. [2018-11-12 18:37:20,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:37:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 14595 transitions. [2018-11-12 18:37:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-12 18:37:20,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:20,808 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:37:20,809 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:20,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash -294220068, now seen corresponding path program 1 times [2018-11-12 18:37:20,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:20,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:20,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:20,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:20,811 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 323 proven. 82 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:37:21,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:21,602 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:21,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-11-12 18:37:21,603 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:21,607 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:21,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:21,719 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:22,911 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:37:22,911 INFO L272 AbstractInterpreter]: Visited 126 different actions 492 times. Merged at 7 different actions 21 times. Never widened. Performed 6812 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6812 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:37:22,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:22,924 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:37:23,446 INFO L227 lantSequenceWeakener]: Weakened 362 states. On average, predicates are now at 75.23% of their original sizes. [2018-11-12 18:37:23,446 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:37:23,562 INFO L415 sIntCurrentIteration]: We unified 366 AI predicates to 366 [2018-11-12 18:37:23,562 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:37:23,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:37:23,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:37:23,562 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:23,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:37:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:37:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:37:23,563 INFO L87 Difference]: Start difference. First operand 10970 states and 14595 transitions. Second operand 11 states. [2018-11-12 18:37:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:37,887 INFO L93 Difference]: Finished difference Result 23658 states and 31945 transitions. [2018-11-12 18:37:37,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:37:37,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 367 [2018-11-12 18:37:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:37,940 INFO L225 Difference]: With dead ends: 23658 [2018-11-12 18:37:37,940 INFO L226 Difference]: Without dead ends: 14031 [2018-11-12 18:37:37,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 376 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:37:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2018-11-12 18:37:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 14014. [2018-11-12 18:37:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14014 states. [2018-11-12 18:37:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 18357 transitions. [2018-11-12 18:37:38,243 INFO L78 Accepts]: Start accepts. Automaton has 14014 states and 18357 transitions. Word has length 367 [2018-11-12 18:37:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:38,244 INFO L480 AbstractCegarLoop]: Abstraction has 14014 states and 18357 transitions. [2018-11-12 18:37:38,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:37:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14014 states and 18357 transitions. [2018-11-12 18:37:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-12 18:37:38,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:38,280 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2018-11-12 18:37:38,280 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:38,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:38,281 INFO L82 PathProgramCache]: Analyzing trace with hash 858162467, now seen corresponding path program 1 times [2018-11-12 18:37:38,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:38,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:38,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:38,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:38,282 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 18:37:38,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:38,873 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:38,874 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-11-12 18:37:38,874 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:38,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:38,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:38,987 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:40,939 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:37:40,940 INFO L272 AbstractInterpreter]: Visited 143 different actions 845 times. Merged at 8 different actions 44 times. Widened at 1 different actions 1 times. Performed 13668 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13668 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:37:40,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:40,945 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:37:41,420 INFO L227 lantSequenceWeakener]: Weakened 364 states. On average, predicates are now at 73.46% of their original sizes. [2018-11-12 18:37:41,420 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:37:41,594 INFO L415 sIntCurrentIteration]: We unified 366 AI predicates to 366 [2018-11-12 18:37:41,595 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:37:41,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:37:41,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 18:37:41,595 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:41,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 18:37:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 18:37:41,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-12 18:37:41,597 INFO L87 Difference]: Start difference. First operand 14014 states and 18357 transitions. Second operand 15 states. [2018-11-12 18:38:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:38:49,473 INFO L93 Difference]: Finished difference Result 40569 states and 54200 transitions. [2018-11-12 18:38:49,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-12 18:38:49,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 367 [2018-11-12 18:38:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:38:49,567 INFO L225 Difference]: With dead ends: 40569 [2018-11-12 18:38:49,568 INFO L226 Difference]: Without dead ends: 25738 [2018-11-12 18:38:49,613 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 408 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=427, Invalid=2765, Unknown=0, NotChecked=0, Total=3192 [2018-11-12 18:38:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25738 states. [2018-11-12 18:38:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25738 to 25015. [2018-11-12 18:38:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25015 states. [2018-11-12 18:38:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25015 states to 25015 states and 31955 transitions. [2018-11-12 18:38:50,094 INFO L78 Accepts]: Start accepts. Automaton has 25015 states and 31955 transitions. Word has length 367 [2018-11-12 18:38:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:38:50,095 INFO L480 AbstractCegarLoop]: Abstraction has 25015 states and 31955 transitions. [2018-11-12 18:38:50,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 18:38:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 25015 states and 31955 transitions. [2018-11-12 18:38:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-11-12 18:38:50,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:50,134 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:50,134 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:50,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:50,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1511023171, now seen corresponding path program 1 times [2018-11-12 18:38:50,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:50,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:50,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:50,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:50,136 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-12 18:38:50,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:50,761 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:38:50,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 382 with the following transitions: [2018-11-12 18:38:50,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:38:50,765 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:38:50,765 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:38:50,923 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:38:52,756 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:38:52,757 INFO L272 AbstractInterpreter]: Visited 142 different actions 982 times. Merged at 8 different actions 57 times. Widened at 1 different actions 2 times. Performed 17836 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17836 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:38:52,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:52,761 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:38:52,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:52,761 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:38:52,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:52,770 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:38:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:52,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:38:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-12 18:38:53,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:38:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-12 18:38:53,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:38:53,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-12 18:38:53,368 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:38:53,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:38:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:38:53,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:38:53,369 INFO L87 Difference]: Start difference. First operand 25015 states and 31955 transitions. Second operand 6 states. [2018-11-12 18:38:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:38:55,244 INFO L93 Difference]: Finished difference Result 40600 states and 53599 transitions. [2018-11-12 18:38:55,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:38:55,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 381 [2018-11-12 18:38:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:38:55,350 INFO L225 Difference]: With dead ends: 40600 [2018-11-12 18:38:55,350 INFO L226 Difference]: Without dead ends: 24136 [2018-11-12 18:38:55,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 763 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:38:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24136 states. [2018-11-12 18:38:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24136 to 23818. [2018-11-12 18:38:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23818 states. [2018-11-12 18:38:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23818 states to 23818 states and 29344 transitions. [2018-11-12 18:38:55,865 INFO L78 Accepts]: Start accepts. Automaton has 23818 states and 29344 transitions. Word has length 381 [2018-11-12 18:38:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:38:55,866 INFO L480 AbstractCegarLoop]: Abstraction has 23818 states and 29344 transitions. [2018-11-12 18:38:55,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:38:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23818 states and 29344 transitions. [2018-11-12 18:38:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-11-12 18:38:55,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:55,905 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 18:38:55,905 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:55,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:55,905 INFO L82 PathProgramCache]: Analyzing trace with hash 153125677, now seen corresponding path program 1 times [2018-11-12 18:38:55,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:55,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:55,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:55,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:55,910 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:56,444 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 18:38:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:38:56,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:56,990 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:38:56,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-11-12 18:38:56,991 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:38:56,993 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:38:56,993 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:38:57,065 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:38:58,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:38:58,054 INFO L272 AbstractInterpreter]: Visited 143 different actions 710 times. Merged at 8 different actions 43 times. Widened at 1 different actions 1 times. Performed 10841 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10841 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:38:58,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:58,065 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:38:58,609 INFO L227 lantSequenceWeakener]: Weakened 411 states. On average, predicates are now at 73.39% of their original sizes. [2018-11-12 18:38:58,609 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:38:58,766 INFO L415 sIntCurrentIteration]: We unified 413 AI predicates to 413 [2018-11-12 18:38:58,766 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:38:58,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:38:58,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2018-11-12 18:38:58,767 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:38:58,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:38:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:38:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:38:58,768 INFO L87 Difference]: Start difference. First operand 23818 states and 29344 transitions. Second operand 13 states. Received shutdown request... [2018-11-12 18:39:24,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 18:39:24,282 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:39:24,289 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:39:24,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:39:24 BoogieIcfgContainer [2018-11-12 18:39:24,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:39:24,290 INFO L168 Benchmark]: Toolchain (without parser) took 207718.53 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -394.5 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 18:39:24,291 INFO L168 Benchmark]: CDTParser took 0.21 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 18:39:24,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 887.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:39:24,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:39:24,294 INFO L168 Benchmark]: Boogie Preprocessor took 145.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:39:24,294 INFO L168 Benchmark]: RCFGBuilder took 4896.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.1 MB). Peak memory consumption was 188.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:39:24,295 INFO L168 Benchmark]: TraceAbstraction took 201612.93 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 215.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-12 18:39:24,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 887.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 170.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.62 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4896.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.1 MB). Peak memory consumption was 188.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201612.93 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 215.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (23818states) and FLOYD_HOARE automaton (currently 28 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (17779 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 201.5s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 172.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3042 SDtfs, 11389 SDslu, 4281 SDs, 0 SdLazy, 28036 SolverSat, 2814 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.0s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 3707 GetRequests, 3532 SyntacticMatches, 3 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25015occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.2s AbstIntTime, 8 AbstIntIterations, 6 AbstIntStrong, 0.9976683242856177 AbsIntWeakeningRatio, 0.09884836852207293 AbsIntAvgWeakeningVarsNumRemoved, 23.796545105566217 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1307 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 4265 NumberOfCodeBlocks, 4265 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4995 ConstructedInterpolants, 0 QuantifiedInterpolants, 5212695 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1246 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 4842/5008 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown