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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:26:15,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:26:15,647 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:26:15,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:26:15,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:26:15,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:26:15,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:26:15,664 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:26:15,666 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:26:15,667 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:26:15,668 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:26:15,668 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:26:15,669 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:26:15,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:26:15,671 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:26:15,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:26:15,673 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:26:15,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:26:15,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:26:15,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:26:15,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:26:15,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:26:15,684 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:26:15,684 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:26:15,684 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:26:15,685 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:26:15,686 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:26:15,687 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:26:15,688 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:26:15,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:26:15,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:26:15,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:26:15,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:26:15,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:26:15,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:26:15,694 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:26:15,694 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:26:15,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:26:15,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:26:15,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:26:15,711 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:26:15,711 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:26:15,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:26:15,711 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:26:15,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:26:15,712 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:26:15,713 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:26:15,713 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:26:15,714 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:26:15,714 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:26:15,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:26:15,714 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:26:15,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:26:15,715 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:26:15,715 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:26:15,715 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:26:15,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:26:15,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:26:15,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:26:15,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:26:15,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:26:15,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:26:15,716 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:26:15,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:26:15,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:26:15,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:26:15,717 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:26:15,717 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:26:15,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:26:15,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:26:15,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:26:15,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:26:15,790 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:26:15,791 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06_true-unreach-call.c [2018-11-07 08:26:15,865 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8455b3a90/c6cf0c607a3848d5a219eac20cc40798/FLAG77e5d18e6 [2018-11-07 08:26:16,475 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:26:16,476 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label06_true-unreach-call.c [2018-11-07 08:26:16,510 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8455b3a90/c6cf0c607a3848d5a219eac20cc40798/FLAG77e5d18e6 [2018-11-07 08:26:16,535 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8455b3a90/c6cf0c607a3848d5a219eac20cc40798 [2018-11-07 08:26:16,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:26:16,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:26:16,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:26:16,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:26:16,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:26:16,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:16" (1/1) ... [2018-11-07 08:26:16,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e69057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:16, skipping insertion in model container [2018-11-07 08:26:16,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:16" (1/1) ... [2018-11-07 08:26:16,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:26:16,668 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:26:17,387 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:26:17,392 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:26:17,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:26:17,633 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:26:17,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17 WrapperNode [2018-11-07 08:26:17,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:26:17,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:26:17,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:26:17,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:26:17,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:26:17,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:26:17,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:26:17,808 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:26:17,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (1/1) ... [2018-11-07 08:26:17,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:26:17,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:26:17,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:26:17,940 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:26:17,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (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 [2018-11-07 08:26:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:26:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:26:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:26:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:26:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:26:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:26:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:26:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:26:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:26:22,530 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:26:22,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:26:22 BoogieIcfgContainer [2018-11-07 08:26:22,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:26:22,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:26:22,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:26:22,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:26:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:26:16" (1/3) ... [2018-11-07 08:26:22,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:26:22, skipping insertion in model container [2018-11-07 08:26:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:17" (2/3) ... [2018-11-07 08:26:22,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:26:22, skipping insertion in model container [2018-11-07 08:26:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:26:22" (3/3) ... [2018-11-07 08:26:22,540 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label06_true-unreach-call.c [2018-11-07 08:26:22,550 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:26:22,559 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:26:22,577 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:26:22,614 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:26:22,614 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:26:22,614 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:26:22,615 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:26:22,615 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:26:22,615 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:26:22,615 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:26:22,615 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:26:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:26:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-07 08:26:22,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:26:22,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:26:22,660 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:26:22,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:22,666 INFO L82 PathProgramCache]: Analyzing trace with hash 712753892, now seen corresponding path program 1 times [2018-11-07 08:26:22,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:26:22,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:22,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:26:22,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:22,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:26:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:26:23,242 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:26:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:26:23,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:26:23,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:26:23,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:26:23,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:26:23,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:26:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:26:23,389 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:26:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:26:25,476 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 08:26:25,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:26:25,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-11-07 08:26:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:26:25,500 INFO L225 Difference]: With dead ends: 782 [2018-11-07 08:26:25,500 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 08:26:25,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:26:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 08:26:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 08:26:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 08:26:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 08:26:25,597 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 70 [2018-11-07 08:26:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:26:25,598 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 08:26:25,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:26:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 08:26:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 08:26:25,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:26:25,609 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, 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] [2018-11-07 08:26:25,609 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:26:25,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1109140143, now seen corresponding path program 1 times [2018-11-07 08:26:25,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:26:25,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:25,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:26:25,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:25,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:26:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:26:26,171 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 08:26:26,416 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 08:26:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:26:26,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:26:26,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 08:26:26,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:26:26,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:26:26,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:26:26,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:26:26,664 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 08:26:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:26:32,951 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-11-07 08:26:32,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 08:26:32,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2018-11-07 08:26:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:26:32,977 INFO L225 Difference]: With dead ends: 1760 [2018-11-07 08:26:32,977 INFO L226 Difference]: Without dead ends: 1284 [2018-11-07 08:26:32,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:26:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-11-07 08:26:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-11-07 08:26:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 08:26:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 08:26:33,089 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 145 [2018-11-07 08:26:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:26:33,090 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 08:26:33,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:26:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 08:26:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 08:26:33,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:26:33,099 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:26:33,100 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:26:33,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1947386976, now seen corresponding path program 1 times [2018-11-07 08:26:33,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:26:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:33,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:26:33,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:33,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:26:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:26:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 126 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:26:33,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:26:33,424 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:26:33,425 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 08:26:33,427 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], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:26:33,472 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:26:33,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:26:34,153 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:26:34,155 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:26:34,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:34,204 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:26:34,842 INFO L227 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.93% of their original sizes. [2018-11-07 08:26:34,842 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:26:35,091 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 08:26:35,092 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:26:35,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:26:35,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:26:35,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:26:35,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:26:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:26:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:26:35,097 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-11-07 08:27:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:26,809 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-07 08:27:26,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:27:26,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2018-11-07 08:27:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:26,817 INFO L225 Difference]: With dead ends: 2260 [2018-11-07 08:27:26,818 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 08:27:26,821 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:27:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 08:27:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-07 08:27:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-07 08:27:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-07 08:27:26,853 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 218 [2018-11-07 08:27:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:26,854 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-07 08:27:26,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:27:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-07 08:27:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 08:27:26,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:26,860 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:27:26,860 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:26,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 24877702, now seen corresponding path program 1 times [2018-11-07 08:27:26,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:26,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:26,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:26,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:26,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:27:27,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:27,796 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:27,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 08:27:27,797 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], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [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], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:27:27,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:27,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:28,489 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:27:28,490 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:27:28,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:28,530 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:27:28,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:28,530 INFO L194 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 [2018-11-07 08:27:28,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:28,549 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:27:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:28,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:27:34,126 WARN L179 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 118 DAG size of output: 31 [2018-11-07 08:27:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:27:34,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:27:34,657 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 08:27:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:27:35,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 08:27:35,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-11-07 08:27:35,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:35,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:27:35,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:27:35,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2018-11-07 08:27:35,078 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-11-07 08:27:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:38,039 INFO L93 Difference]: Finished difference Result 2966 states and 4885 transitions. [2018-11-07 08:27:38,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:27:38,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-11-07 08:27:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:38,054 INFO L225 Difference]: With dead ends: 2966 [2018-11-07 08:27:38,055 INFO L226 Difference]: Without dead ends: 1935 [2018-11-07 08:27:38,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 523 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2018-11-07 08:27:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2018-11-07 08:27:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1935. [2018-11-07 08:27:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2018-11-07 08:27:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2922 transitions. [2018-11-07 08:27:38,119 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2922 transitions. Word has length 262 [2018-11-07 08:27:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:38,120 INFO L480 AbstractCegarLoop]: Abstraction has 1935 states and 2922 transitions. [2018-11-07 08:27:38,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:27:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2922 transitions. [2018-11-07 08:27:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-11-07 08:27:38,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:38,128 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:27:38,128 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:38,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 633050955, now seen corresponding path program 1 times [2018-11-07 08:27:38,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:38,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:38,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:38,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:38,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 08:27:38,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:38,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:27:38,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:38,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:27:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:27:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:27:38,421 INFO L87 Difference]: Start difference. First operand 1935 states and 2922 transitions. Second operand 3 states. [2018-11-07 08:27:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:40,109 INFO L93 Difference]: Finished difference Result 4926 states and 7784 transitions. [2018-11-07 08:27:40,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:27:40,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 288 [2018-11-07 08:27:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:40,128 INFO L225 Difference]: With dead ends: 4926 [2018-11-07 08:27:40,129 INFO L226 Difference]: Without dead ends: 3187 [2018-11-07 08:27:40,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:27:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2018-11-07 08:27:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3182. [2018-11-07 08:27:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3182 states. [2018-11-07 08:27:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4499 transitions. [2018-11-07 08:27:40,236 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4499 transitions. Word has length 288 [2018-11-07 08:27:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:40,237 INFO L480 AbstractCegarLoop]: Abstraction has 3182 states and 4499 transitions. [2018-11-07 08:27:40,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:27:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4499 transitions. [2018-11-07 08:27:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-11-07 08:27:40,250 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:40,251 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:27:40,251 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:40,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -784775536, now seen corresponding path program 1 times [2018-11-07 08:27:40,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:40,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:40,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:40,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:40,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:27:40,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:40,637 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:40,637 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-11-07 08:27:40,638 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], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [618], [623], [625], [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] [2018-11-07 08:27:40,642 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:40,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:41,207 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:27:41,207 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:27:41,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:41,243 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:27:41,641 INFO L227 lantSequenceWeakener]: Weakened 285 states. On average, predicates are now at 75.66% of their original sizes. [2018-11-07 08:27:41,641 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:27:42,125 INFO L415 sIntCurrentIteration]: We unified 289 AI predicates to 289 [2018-11-07 08:27:42,126 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:27:42,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:27:42,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:27:42,126 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:42,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:27:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:27:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:27:42,130 INFO L87 Difference]: Start difference. First operand 3182 states and 4499 transitions. Second operand 10 states. [2018-11-07 08:28:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:40,897 INFO L93 Difference]: Finished difference Result 6560 states and 9429 transitions. [2018-11-07 08:28:40,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:28:40,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 290 [2018-11-07 08:28:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:40,914 INFO L225 Difference]: With dead ends: 6560 [2018-11-07 08:28:40,914 INFO L226 Difference]: Without dead ends: 3574 [2018-11-07 08:28:40,925 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 298 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:28:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2018-11-07 08:28:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3567. [2018-11-07 08:28:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3567 states. [2018-11-07 08:28:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 4970 transitions. [2018-11-07 08:28:41,007 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 4970 transitions. Word has length 290 [2018-11-07 08:28:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:41,007 INFO L480 AbstractCegarLoop]: Abstraction has 3567 states and 4970 transitions. [2018-11-07 08:28:41,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:28:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 4970 transitions. [2018-11-07 08:28:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 08:28:41,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:41,018 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:28:41,019 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:41,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:41,019 INFO L82 PathProgramCache]: Analyzing trace with hash 802470132, now seen corresponding path program 1 times [2018-11-07 08:28:41,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:41,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:41,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:41,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:41,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 131 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 08:28:41,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:41,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:28:41,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-07 08:28:41,359 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], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [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] [2018-11-07 08:28:41,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:28:41,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:28:41,590 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:28:41,590 INFO L272 AbstractInterpreter]: Visited 141 different actions 417 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:28:41,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:41,604 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:28:41,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:41,604 INFO L194 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 [2018-11-07 08:28:41,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:41,614 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:28:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:41,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:28:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:28:41,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:28:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:28:42,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:28:42,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-07 08:28:42,136 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:28:42,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 08:28:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 08:28:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:28:42,138 INFO L87 Difference]: Start difference. First operand 3567 states and 4970 transitions. Second operand 11 states. [2018-11-07 08:28:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:58,980 INFO L93 Difference]: Finished difference Result 20051 states and 33019 transitions. [2018-11-07 08:28:58,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-07 08:28:58,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 293 [2018-11-07 08:28:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:59,117 INFO L225 Difference]: With dead ends: 20051 [2018-11-07 08:28:59,118 INFO L226 Difference]: Without dead ends: 16679 [2018-11-07 08:28:59,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 611 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=938, Invalid=4032, Unknown=0, NotChecked=0, Total=4970 [2018-11-07 08:28:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16679 states. [2018-11-07 08:28:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16679 to 16008. [2018-11-07 08:28:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16008 states. [2018-11-07 08:28:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16008 states to 16008 states and 23937 transitions. [2018-11-07 08:28:59,793 INFO L78 Accepts]: Start accepts. Automaton has 16008 states and 23937 transitions. Word has length 293 [2018-11-07 08:28:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:59,794 INFO L480 AbstractCegarLoop]: Abstraction has 16008 states and 23937 transitions. [2018-11-07 08:28:59,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 08:28:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16008 states and 23937 transitions. [2018-11-07 08:28:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-07 08:28:59,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:59,892 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, 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, 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] [2018-11-07 08:28:59,892 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:59,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash 890845205, now seen corresponding path program 1 times [2018-11-07 08:28:59,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:59,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:59,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:59,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:59,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:29:00,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:00,608 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:29:00,608 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-07 08:29:00,609 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], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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] [2018-11-07 08:29:00,615 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:29:00,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:29:01,160 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:29:01,161 INFO L272 AbstractInterpreter]: Visited 126 different actions 377 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:29:01,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:01,197 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:29:01,612 INFO L227 lantSequenceWeakener]: Weakened 370 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-07 08:29:01,613 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:29:01,720 INFO L415 sIntCurrentIteration]: We unified 372 AI predicates to 372 [2018-11-07 08:29:01,720 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:29:01,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:29:01,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 08:29:01,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:29:01,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 08:29:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 08:29:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:29:01,723 INFO L87 Difference]: Start difference. First operand 16008 states and 23937 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 08:30:15,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 08:30:15,954 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:30:15,959 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:30:15,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:30:15 BoogieIcfgContainer [2018-11-07 08:30:15,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:30:15,960 INFO L168 Benchmark]: Toolchain (without parser) took 239411.83 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 9.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 08:30:15,961 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. [2018-11-07 08:30:15,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1082.08 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:15,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 172.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:15,964 INFO L168 Benchmark]: Boogie Preprocessor took 131.43 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. [2018-11-07 08:30:15,964 INFO L168 Benchmark]: RCFGBuilder took 4591.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 169.8 MB). Peak memory consumption was 169.8 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:15,965 INFO L168 Benchmark]: TraceAbstraction took 233426.96 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 637.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 08:30:15,969 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 1082.08 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 172.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.43 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 4591.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 169.8 MB). Peak memory consumption was 169.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233426.96 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 637.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (16008states) and FLOYD_HOARE automaton (currently 15 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (30210 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 214.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1891 SDtfs, 8473 SDslu, 2457 SDs, 0 SdLazy, 19392 SolverSat, 3410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 180.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2134 GetRequests, 2002 SyntacticMatches, 8 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16008occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9976884726807972 AbsIntWeakeningRatio, 0.10364464692482915 AbsIntAvgWeakeningVarsNumRemoved, 17.97608200455581 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 937 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 2494 NumberOfCodeBlocks, 2494 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3037 ConstructedInterpolants, 2 QuantifiedInterpolants, 2586206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 967 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 2004/2421 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown