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/Problem15_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:14:36,687 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:14:36,689 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:14:36,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:14:36,709 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:14:36,710 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:14:36,711 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:14:36,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:14:36,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:14:36,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:14:36,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:14:36,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:14:36,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:14:36,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:14:36,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:14:36,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:14:36,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:14:36,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:14:36,726 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:14:36,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:14:36,731 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:14:36,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:14:36,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:14:36,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:14:36,743 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:14:36,744 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:14:36,745 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:14:36,746 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:14:36,750 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:14:36,751 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:14:36,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:14:36,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:14:36,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:14:36,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:14:36,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:14:36,758 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:14:36,759 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 19:14:36,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:14:36,779 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:14:36,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:14:36,780 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:14:36,780 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:14:36,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:14:36,781 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:14:36,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:14:36,781 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:14:36,781 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:14:36,781 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:14:36,782 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:14:36,782 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:14:36,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:14:36,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:14:36,783 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:14:36,783 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:14:36,783 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:14:36,783 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:14:36,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:14:36,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:14:36,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:14:36,784 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:14:36,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:14:36,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:14:36,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:14:36,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:14:36,785 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:14:36,786 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:14:36,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:14:36,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:14:36,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:14:36,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:14:36,859 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:14:36,859 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:14:36,860 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-12 19:14:36,922 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51534a9cf/0f879123f0b5483681e7eea791e40aa2/FLAG39f482aa7 [2018-11-12 19:14:37,663 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:14:37,666 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-12 19:14:37,691 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51534a9cf/0f879123f0b5483681e7eea791e40aa2/FLAG39f482aa7 [2018-11-12 19:14:37,711 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51534a9cf/0f879123f0b5483681e7eea791e40aa2 [2018-11-12 19:14:37,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:14:37,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:14:37,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:14:37,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:14:37,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:14:37,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:14:37" (1/1) ... [2018-11-12 19:14:37,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f0d61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:37, skipping insertion in model container [2018-11-12 19:14:37,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:14:37" (1/1) ... [2018-11-12 19:14:37,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:14:37,841 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:14:38,751 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:14:38,755 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:14:39,092 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:14:39,114 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:14:39,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39 WrapperNode [2018-11-12 19:14:39,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:14:39,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:14:39,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:14:39,117 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:14:39,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:14:39,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:14:39,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:14:39,326 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:14:39,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (1/1) ... [2018-11-12 19:14:39,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:14:39,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:14:39,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:14:39,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:14:39,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (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 19:14:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:14:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:14:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:14:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:14:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:14:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:14:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:14:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:14:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:14:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:14:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:14:45,885 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:14:45,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:14:45 BoogieIcfgContainer [2018-11-12 19:14:45,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:14:45,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:14:45,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:14:45,891 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:14:45,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:14:37" (1/3) ... [2018-11-12 19:14:45,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19db3612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:14:45, skipping insertion in model container [2018-11-12 19:14:45,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:14:39" (2/3) ... [2018-11-12 19:14:45,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19db3612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:14:45, skipping insertion in model container [2018-11-12 19:14:45,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:14:45" (3/3) ... [2018-11-12 19:14:45,895 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label42_true-unreach-call.c [2018-11-12 19:14:45,905 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:14:45,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:14:45,928 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:14:45,970 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:14:45,970 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:14:45,971 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:14:45,971 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:14:45,971 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:14:45,971 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:14:45,971 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:14:45,972 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:14:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:14:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-12 19:14:46,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:46,019 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] [2018-11-12 19:14:46,021 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:46,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:46,027 INFO L82 PathProgramCache]: Analyzing trace with hash 592671889, now seen corresponding path program 1 times [2018-11-12 19:14:46,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:46,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:46,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:46,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:46,080 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:46,569 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-12 19:14:46,616 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 19:14:46,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:14:46,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:14:46,622 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:46,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:14:46,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:14:46,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:14:46,675 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:14:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:53,906 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 19:14:53,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:14:53,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-12 19:14:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:53,935 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 19:14:53,935 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 19:14:53,945 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 19:14:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 19:14:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-12 19:14:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-12 19:14:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-12 19:14:54,104 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 53 [2018-11-12 19:14:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:54,105 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-12 19:14:54,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:14:54,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-12 19:14:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 19:14:54,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:54,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:54,115 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:54,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:54,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1626960388, now seen corresponding path program 1 times [2018-11-12 19:14:54,116 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:54,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:54,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:54,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:54,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:54,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:14:54,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:14:54,371 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:54,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:14:54,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:14:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:14:54,374 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-12 19:14:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:59,642 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-12 19:14:59,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:59,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-11-12 19:14:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:59,672 INFO L225 Difference]: With dead ends: 3246 [2018-11-12 19:14:59,672 INFO L226 Difference]: Without dead ends: 2161 [2018-11-12 19:14:59,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:14:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-12 19:14:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-12 19:14:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-12 19:14:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-12 19:14:59,769 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 126 [2018-11-12 19:14:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:59,770 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-12 19:14:59,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:14:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-12 19:14:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-12 19:14:59,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:59,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:59,774 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:59,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 108586508, now seen corresponding path program 1 times [2018-11-12 19:14:59,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:59,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:59,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:59,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:59,776 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:15:00,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:15:00,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:15:00,015 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:00,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:15:00,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:15:00,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:15:00,017 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-12 19:15:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:06,252 INFO L93 Difference]: Finished difference Result 7944 states and 12441 transitions. [2018-11-12 19:15:06,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:15:06,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-12 19:15:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:06,295 INFO L225 Difference]: With dead ends: 7944 [2018-11-12 19:15:06,295 INFO L226 Difference]: Without dead ends: 5836 [2018-11-12 19:15:06,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:15:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-11-12 19:15:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-11-12 19:15:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-11-12 19:15:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-11-12 19:15:06,506 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 134 [2018-11-12 19:15:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:06,507 INFO L480 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-11-12 19:15:06,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:15:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-11-12 19:15:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-12 19:15:06,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:06,522 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, 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 19:15:06,522 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:06,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash 2141238506, now seen corresponding path program 1 times [2018-11-12 19:15:06,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:06,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:06,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:06,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:06,525 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:06,877 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:15:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:15:07,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:07,313 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:07,315 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-12 19:15:07,323 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:07,395 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:07,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:08,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:15:08,008 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Performed 992 root evaluator evaluations with a maximum evaluation depth of 4. Performed 992 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:15:08,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:08,052 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:08,627 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78% of their original sizes. [2018-11-12 19:15:08,627 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:08,747 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-12 19:15:08,747 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:08,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:08,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 19:15:08,749 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:08,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:15:08,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:15:08,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:15:08,750 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-11-12 19:15:11,754 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:28,107 INFO L93 Difference]: Finished difference Result 11972 states and 16730 transitions. [2018-11-12 19:15:28,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:15:28,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2018-11-12 19:15:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:28,145 INFO L225 Difference]: With dead ends: 11972 [2018-11-12 19:15:28,145 INFO L226 Difference]: Without dead ends: 6144 [2018-11-12 19:15:28,178 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:15:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-11-12 19:15:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2018-11-12 19:15:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2018-11-12 19:15:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8490 transitions. [2018-11-12 19:15:28,359 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8490 transitions. Word has length 223 [2018-11-12 19:15:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:28,359 INFO L480 AbstractCegarLoop]: Abstraction has 6142 states and 8490 transitions. [2018-11-12 19:15:28,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:15:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8490 transitions. [2018-11-12 19:15:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-12 19:15:28,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:28,376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:28,376 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:28,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:28,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1234707616, now seen corresponding path program 1 times [2018-11-12 19:15:28,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:28,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:28,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:28,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:28,378 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:28,755 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:15:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 144 proven. 212 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:15:29,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:29,290 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:29,290 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-12 19:15:29,291 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:29,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:29,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:29,404 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:30,341 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:15:30,341 INFO L272 AbstractInterpreter]: Visited 109 different actions 727 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 10217 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10217 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:15:30,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:30,380 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:31,578 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-12 19:15:31,578 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:35,573 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-11-12 19:15:35,574 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:35,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:35,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:15:35,575 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:35,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:15:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:15:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:15:35,577 INFO L87 Difference]: Start difference. First operand 6142 states and 8490 transitions. Second operand 19 states. [2018-11-12 19:16:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:28,124 INFO L93 Difference]: Finished difference Result 14302 states and 19511 transitions. [2018-11-12 19:16:28,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 19:16:28,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 319 [2018-11-12 19:16:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:28,180 INFO L225 Difference]: With dead ends: 14302 [2018-11-12 19:16:28,180 INFO L226 Difference]: Without dead ends: 8474 [2018-11-12 19:16:28,219 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 337 GetRequests, 237 SyntacticMatches, 64 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 19:16:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-11-12 19:16:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 7103. [2018-11-12 19:16:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2018-11-12 19:16:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 9496 transitions. [2018-11-12 19:16:28,404 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 9496 transitions. Word has length 319 [2018-11-12 19:16:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:28,404 INFO L480 AbstractCegarLoop]: Abstraction has 7103 states and 9496 transitions. [2018-11-12 19:16:28,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:16:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 9496 transitions. [2018-11-12 19:16:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-11-12 19:16:28,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:28,418 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:28,418 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:28,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:28,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1124772304, now seen corresponding path program 1 times [2018-11-12 19:16:28,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:28,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:28,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:28,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:28,420 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:29,255 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-11-12 19:16:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:16:30,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:30,300 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:16:30,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 411 with the following transitions: [2018-11-12 19:16:30,301 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:16:30,310 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:16:30,310 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:16:30,521 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:16:31,063 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:16:31,064 INFO L272 AbstractInterpreter]: Visited 296 different actions 879 times. Merged at 7 different actions 15 times. Never widened. Performed 12977 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12977 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:16:31,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:31,069 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:16:31,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:31,070 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:16:31,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:31,081 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:16:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:31,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:17:04,737 WARN L179 SmtUtils]: Spent 32.97 s on a formula simplification. DAG size of input: 472 DAG size of output: 91 [2018-11-12 19:17:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:17:07,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:17:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:17:07,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:17:07,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-12 19:17:07,931 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:07,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:17:07,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:17:07,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 19:17:07,933 INFO L87 Difference]: Start difference. First operand 7103 states and 9496 transitions. Second operand 3 states. [2018-11-12 19:17:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:10,988 INFO L93 Difference]: Finished difference Result 19160 states and 26845 transitions. [2018-11-12 19:17:10,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:17:10,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 410 [2018-11-12 19:17:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:11,037 INFO L225 Difference]: With dead ends: 19160 [2018-11-12 19:17:11,037 INFO L226 Difference]: Without dead ends: 9149 [2018-11-12 19:17:11,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 817 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 19:17:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2018-11-12 19:17:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 9148. [2018-11-12 19:17:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9148 states. [2018-11-12 19:17:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9148 states to 9148 states and 11744 transitions. [2018-11-12 19:17:11,683 INFO L78 Accepts]: Start accepts. Automaton has 9148 states and 11744 transitions. Word has length 410 [2018-11-12 19:17:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:11,684 INFO L480 AbstractCegarLoop]: Abstraction has 9148 states and 11744 transitions. [2018-11-12 19:17:11,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:17:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9148 states and 11744 transitions. [2018-11-12 19:17:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-11-12 19:17:11,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:11,787 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:17:11,787 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:11,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash -403770916, now seen corresponding path program 1 times [2018-11-12 19:17:11,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:11,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:11,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:11,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:11,789 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 611 proven. 2 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2018-11-12 19:17:13,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:17:13,128 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:17:13,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 754 with the following transitions: [2018-11-12 19:17:13,129 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1359], [1362], [1366], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:17:13,135 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:17:13,135 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:17:13,360 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:17:13,712 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:17:13,713 INFO L272 AbstractInterpreter]: Visited 285 different actions 564 times. Merged at 5 different actions 5 times. Never widened. Performed 7660 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7660 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:17:13,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:13,752 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:17:14,718 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 80.17% of their original sizes. [2018-11-12 19:17:14,718 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:17:15,283 INFO L415 sIntCurrentIteration]: We unified 752 AI predicates to 752 [2018-11-12 19:17:15,284 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:17:15,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:17:15,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 19:17:15,285 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:15,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:17:15,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:17:15,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:17:15,286 INFO L87 Difference]: Start difference. First operand 9148 states and 11744 transitions. Second operand 21 states. [2018-11-12 19:18:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:18:18,590 INFO L93 Difference]: Finished difference Result 18295 states and 23602 transitions. [2018-11-12 19:18:18,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:18:18,591 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 753 [2018-11-12 19:18:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:18:18,637 INFO L225 Difference]: With dead ends: 18295 [2018-11-12 19:18:18,637 INFO L226 Difference]: Without dead ends: 10066 [2018-11-12 19:18:18,663 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 769 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 19:18:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2018-11-12 19:18:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 9458. [2018-11-12 19:18:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9458 states. [2018-11-12 19:18:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 12062 transitions. [2018-11-12 19:18:18,876 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 12062 transitions. Word has length 753 [2018-11-12 19:18:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:18:18,877 INFO L480 AbstractCegarLoop]: Abstraction has 9458 states and 12062 transitions. [2018-11-12 19:18:18,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:18:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 12062 transitions. [2018-11-12 19:18:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-11-12 19:18:18,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:18:18,967 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:18:18,967 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:18:18,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash -445707996, now seen corresponding path program 1 times [2018-11-12 19:18:18,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:18:18,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:18,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:18:18,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:18,969 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:18:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 19:18:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-11-12 19:18:20,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:18:20,778 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:18:20,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 785 with the following transitions: [2018-11-12 19:18:20,779 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [742], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1359], [1362], [1366], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:18:20,785 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:18:20,785 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:18:20,785 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:18:20,786 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:18:20,786 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:18:20,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:18:20,787 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:18:20,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:18:20,801 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:18:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:18:21,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:18:21,077 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:18:21,279 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:18:21,280 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:18:21,285 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:18:21,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:18:21 BoogieIcfgContainer [2018-11-12 19:18:21,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:18:21,287 INFO L168 Benchmark]: Toolchain (without parser) took 223561.67 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -745.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,288 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:18:21,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1388.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,290 INFO L168 Benchmark]: Boogie Preprocessor took 186.01 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,291 INFO L168 Benchmark]: RCFGBuilder took 6373.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 275.4 MB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,292 INFO L168 Benchmark]: TraceAbstraction took 215398.66 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -264.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 19:18:21,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1388.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.01 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6373.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 275.4 MB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215398.66 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -264.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was analyzing trace of length 785 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 215.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 157.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3005 SDtfs, 13720 SDslu, 2060 SDs, 0 SdLazy, 21648 SolverSat, 2697 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2180 GetRequests, 2013 SyntacticMatches, 68 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 42.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9458occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9977885078461768 AbsIntWeakeningRatio, 0.07430340557275542 AbsIntAvgWeakeningVarsNumRemoved, 16.486068111455108 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 2054 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.5s InterpolantComputationTime, 2428 NumberOfCodeBlocks, 2428 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2829 ConstructedInterpolants, 49 QuantifiedInterpolants, 4877751 SizeOfPredicates, 3 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 1530/1990 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown