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/Problem19_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:55:14,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:55:14,547 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:55:14,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:55:14,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:55:14,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:55:14,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:55:14,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:55:14,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:55:14,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:55:14,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:55:14,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:55:14,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:55:14,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:55:14,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:55:14,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:55:14,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:55:14,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:55:14,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:55:14,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:55:14,583 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:55:14,584 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:55:14,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:55:14,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:55:14,587 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:55:14,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:55:14,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:55:14,590 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:55:14,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:55:14,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:55:14,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:55:14,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:55:14,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:55:14,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:55:14,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:55:14,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:55:14,598 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 19:55:14,626 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:55:14,626 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:55:14,627 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:55:14,627 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:55:14,627 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:55:14,627 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:55:14,628 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:55:14,628 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:55:14,628 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:55:14,628 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:55:14,628 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:55:14,629 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:55:14,629 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:55:14,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:55:14,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:55:14,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:55:14,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:55:14,630 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:55:14,630 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:55:14,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:55:14,631 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:55:14,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:55:14,631 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:55:14,631 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:55:14,632 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:55:14,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:55:14,632 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:55:14,632 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:55:14,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:55:14,633 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:55:14,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:55:14,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:55:14,633 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:55:14,634 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:55:14,634 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:55:14,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:55:14,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:55:14,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:55:14,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:55:14,709 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:55:14,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-11-12 19:55:14,791 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc1f804d/ad7e9e133e3f4941ba7b67390483015c/FLAG9efd846e9 [2018-11-12 19:55:15,741 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:55:15,744 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-11-12 19:55:15,792 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc1f804d/ad7e9e133e3f4941ba7b67390483015c/FLAG9efd846e9 [2018-11-12 19:55:15,813 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc1f804d/ad7e9e133e3f4941ba7b67390483015c [2018-11-12 19:55:15,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:55:15,829 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:55:15,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:55:15,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:55:15,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:55:15,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:55:15" (1/1) ... [2018-11-12 19:55:15,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd8c054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:15, skipping insertion in model container [2018-11-12 19:55:15,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:55:15" (1/1) ... [2018-11-12 19:55:15,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:55:16,129 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:55:18,082 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:55:18,087 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:55:19,076 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:55:19,135 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:55:19,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19 WrapperNode [2018-11-12 19:55:19,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:55:19,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:55:19,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:55:19,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:55:19,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:55:19,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:55:19,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:55:19,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:55:19,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:19,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:20,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:20,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (1/1) ... [2018-11-12 19:55:20,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:55:20,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:55:20,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:55:20,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:55:20,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (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 19:55:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:55:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:55:20,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:55:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 19:55:20,257 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 19:55:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 19:55:20,258 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 19:55:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 19:55:20,258 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 19:55:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:55:20,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:55:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:55:20,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:55:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:55:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:55:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:55:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:55:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:55:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:55:36,605 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:55:36,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:55:36 BoogieIcfgContainer [2018-11-12 19:55:36,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:55:36,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:55:36,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:55:36,615 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:55:36,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:55:15" (1/3) ... [2018-11-12 19:55:36,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e55330a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:55:36, skipping insertion in model container [2018-11-12 19:55:36,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:55:19" (2/3) ... [2018-11-12 19:55:36,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e55330a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:55:36, skipping insertion in model container [2018-11-12 19:55:36,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:55:36" (3/3) ... [2018-11-12 19:55:36,619 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label56_true-unreach-call.c [2018-11-12 19:55:36,629 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:55:36,640 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:55:36,658 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:55:36,722 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:55:36,722 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:55:36,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:55:36,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:55:36,723 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:55:36,723 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:55:36,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:55:36,723 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:55:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 19:55:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-12 19:55:36,791 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:55:36,792 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:55:36,795 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:55:36,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:55:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1524406668, now seen corresponding path program 1 times [2018-11-12 19:55:36,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:55:36,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:55:36,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:55:36,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:55:36,862 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:55:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:55:37,369 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-12 19:55:37,392 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 19:55:37,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:55:37,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:55:37,395 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:55:37,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:55:37,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:55:37,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:55:37,421 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-12 19:55:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:55:58,541 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-12 19:55:58,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:55:58,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-11-12 19:55:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:55:58,612 INFO L225 Difference]: With dead ends: 6513 [2018-11-12 19:55:58,612 INFO L226 Difference]: Without dead ends: 4729 [2018-11-12 19:55:58,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:55:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-12 19:55:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-12 19:55:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-12 19:55:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-12 19:55:59,051 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 58 [2018-11-12 19:55:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:55:59,052 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-12 19:55:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:55:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-12 19:55:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-12 19:55:59,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:55:59,069 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:55:59,070 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:55:59,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:55:59,070 INFO L82 PathProgramCache]: Analyzing trace with hash 650916201, now seen corresponding path program 1 times [2018-11-12 19:55:59,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:55:59,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:55:59,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:55:59,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:55:59,073 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:55:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:55:59,493 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:55:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:55:59,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:55:59,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:55:59,888 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:55:59,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:55:59,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:55:59,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:55:59,892 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-12 19:56:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:56:24,747 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-12 19:56:24,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:56:24,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-12 19:56:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:56:24,839 INFO L225 Difference]: With dead ends: 17886 [2018-11-12 19:56:24,840 INFO L226 Difference]: Without dead ends: 13199 [2018-11-12 19:56:25,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:56:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-12 19:56:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-12 19:56:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-12 19:56:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-12 19:56:25,383 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 130 [2018-11-12 19:56:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:56:25,383 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-12 19:56:25,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:56:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-12 19:56:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-12 19:56:25,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:56:25,390 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, 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 19:56:25,390 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:56:25,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:56:25,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1399116121, now seen corresponding path program 1 times [2018-11-12 19:56:25,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:56:25,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:56:25,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:56:25,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:56:25,392 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:56:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:56:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:56:25,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:56:25,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:56:25,867 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:56:25,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:56:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:56:25,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:56:25,868 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-12 19:56:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:56:42,046 INFO L93 Difference]: Finished difference Result 39956 states and 60354 transitions. [2018-11-12 19:56:42,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:56:42,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-12 19:56:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:56:42,151 INFO L225 Difference]: With dead ends: 39956 [2018-11-12 19:56:42,151 INFO L226 Difference]: Without dead ends: 26832 [2018-11-12 19:56:42,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:56:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26832 states. [2018-11-12 19:56:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26832 to 26548. [2018-11-12 19:56:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26548 states. [2018-11-12 19:56:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26548 states to 26548 states and 38657 transitions. [2018-11-12 19:56:42,837 INFO L78 Accepts]: Start accepts. Automaton has 26548 states and 38657 transitions. Word has length 140 [2018-11-12 19:56:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:56:42,837 INFO L480 AbstractCegarLoop]: Abstraction has 26548 states and 38657 transitions. [2018-11-12 19:56:42,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:56:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 26548 states and 38657 transitions. [2018-11-12 19:56:42,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-12 19:56:42,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:56:42,841 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, 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] [2018-11-12 19:56:42,842 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:56:42,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:56:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 564505847, now seen corresponding path program 1 times [2018-11-12 19:56:42,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:56:42,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:56:42,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:56:42,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:56:42,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:56:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:56:43,184 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:56:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:56:43,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:56:43,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:56:43,571 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:56:43,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:56:43,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:56:43,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:56:43,573 INFO L87 Difference]: Start difference. First operand 26548 states and 38657 transitions. Second operand 6 states. [2018-11-12 19:57:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:57:03,920 INFO L93 Difference]: Finished difference Result 70560 states and 106744 transitions. [2018-11-12 19:57:03,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:57:03,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-11-12 19:57:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:57:04,075 INFO L225 Difference]: With dead ends: 70560 [2018-11-12 19:57:04,075 INFO L226 Difference]: Without dead ends: 44018 [2018-11-12 19:57:04,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:57:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44018 states. [2018-11-12 19:57:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44018 to 43867. [2018-11-12 19:57:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43867 states. [2018-11-12 19:57:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43867 states to 43867 states and 61111 transitions. [2018-11-12 19:57:05,354 INFO L78 Accepts]: Start accepts. Automaton has 43867 states and 61111 transitions. Word has length 173 [2018-11-12 19:57:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:57:05,355 INFO L480 AbstractCegarLoop]: Abstraction has 43867 states and 61111 transitions. [2018-11-12 19:57:05,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:57:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 43867 states and 61111 transitions. [2018-11-12 19:57:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-12 19:57:05,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:57:05,361 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:57:05,361 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:57:05,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:57:05,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1395186466, now seen corresponding path program 1 times [2018-11-12 19:57:05,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:57:05,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:57:05,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:57:05,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:57:05,363 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:57:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:57:05,632 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:57:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 102 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:57:06,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:57:06,038 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:57:06,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-12 19:57:06,041 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5590], [5592], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 19:57:06,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:57:06,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:57:06,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:57:06,640 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Performed 747 root evaluator evaluations with a maximum evaluation depth of 3. Performed 747 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 19:57:06,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:57:06,680 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:57:07,221 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-12 19:57:07,221 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:57:07,566 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-12 19:57:07,566 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:57:07,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:57:07,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:57:07,567 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:57:07,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:57:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:57:07,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:57:07,569 INFO L87 Difference]: Start difference. First operand 43867 states and 61111 transitions. Second operand 7 states. [2018-11-12 19:57:13,539 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:58:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:58:31,994 INFO L93 Difference]: Finished difference Result 89120 states and 123932 transitions. [2018-11-12 19:58:31,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:58:31,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2018-11-12 19:58:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:58:32,127 INFO L225 Difference]: With dead ends: 89120 [2018-11-12 19:58:32,127 INFO L226 Difference]: Without dead ends: 45259 [2018-11-12 19:58:32,191 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 209 GetRequests, 203 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 19:58:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45259 states. [2018-11-12 19:58:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45259 to 45257. [2018-11-12 19:58:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45257 states. [2018-11-12 19:58:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45257 states to 45257 states and 62517 transitions. [2018-11-12 19:58:32,909 INFO L78 Accepts]: Start accepts. Automaton has 45257 states and 62517 transitions. Word has length 209 [2018-11-12 19:58:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:58:32,910 INFO L480 AbstractCegarLoop]: Abstraction has 45257 states and 62517 transitions. [2018-11-12 19:58:32,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:58:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 45257 states and 62517 transitions. [2018-11-12 19:58:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-11-12 19:58:32,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:58:32,922 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:32,923 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:58:32,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:58:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1567533576, now seen corresponding path program 1 times [2018-11-12 19:58:32,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:58:32,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:58:32,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:58:32,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:58:32,926 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:58:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:58:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:58:33,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:58:33,453 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:58:33,453 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 371 with the following transitions: [2018-11-12 19:58:33,454 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5590], [5592], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 19:58:33,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:58:33,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:58:34,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:58:34,521 INFO L272 AbstractInterpreter]: Visited 248 different actions 492 times. Merged at 5 different actions 7 times. Never widened. Performed 11866 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11866 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:58:34,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:58:34,558 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:58:36,413 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 76.59% of their original sizes. [2018-11-12 19:58:36,414 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-12 19:58:37,870 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:58:37,875 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:58:37,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:58:37 BoogieIcfgContainer [2018-11-12 19:58:37,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:58:37,877 INFO L168 Benchmark]: Toolchain (without parser) took 202048.86 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,878 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 19:58:37,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3305.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 533.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,882 INFO L168 Benchmark]: Boogie Preprocessor took 512.85 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,882 INFO L168 Benchmark]: RCFGBuilder took 16423.30 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 162.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.9 MB). Peak memory consumption was 669.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,883 INFO L168 Benchmark]: TraceAbstraction took 181268.24 ms. Allocated memory was 2.5 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 19:58:37,893 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 3305.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 533.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 512.85 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16423.30 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 162.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.9 MB). Peak memory consumption was 669.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 181268.24 ms. Allocated memory was 2.5 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was analyzing trace of length 371 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 181.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 167.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4946 SDtfs, 28503 SDslu, 3684 SDs, 0 SdLazy, 46646 SolverSat, 9844 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 246 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45257occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9980926399097598 AbsIntWeakeningRatio, 0.09705372616984402 AbsIntAvgWeakeningVarsNumRemoved, 10.076256499133448 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 542 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 705 ConstructedInterpolants, 0 QuantifiedInterpolants, 429201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 260/325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown