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_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:13:01,619 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:13:01,622 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:13:01,640 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:13:01,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:13:01,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:13:01,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:13:01,646 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:13:01,648 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:13:01,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:13:01,652 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:13:01,652 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:13:01,653 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:13:01,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:13:01,658 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:13:01,660 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:13:01,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:13:01,671 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:13:01,673 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:13:01,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:13:01,678 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:13:01,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:13:01,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:13:01,687 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:13:01,687 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:13:01,688 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:13:01,689 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:13:01,690 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:13:01,694 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:13:01,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:13:01,696 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:13:01,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:13:01,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:13:01,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:13:01,700 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:13:01,700 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:13:01,701 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 19:13:01,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:13:01,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:13:01,730 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:13:01,733 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:13:01,734 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:13:01,734 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:13:01,734 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:13:01,734 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:13:01,735 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:13:01,735 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:13:01,735 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:13:01,735 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:13:01,735 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:13:01,737 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:13:01,737 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:13:01,737 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:13:01,737 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:13:01,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:13:01,738 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:13:01,738 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:13:01,738 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:13:01,738 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:13:01,738 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:13:01,739 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:13:01,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:13:01,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:13:01,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:13:01,741 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:13:01,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:13:01,741 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:13:01,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:13:01,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:13:01,742 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:13:01,742 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:13:01,742 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:13:01,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:13:01,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:13:01,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:13:01,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:13:01,841 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:13:01,842 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-11-12 19:13:01,917 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede82fb9/01dd21a7cfaa41e492199c089d0da650/FLAG892ce6f8d [2018-11-12 19:13:02,602 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:13:02,605 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-11-12 19:13:02,628 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede82fb9/01dd21a7cfaa41e492199c089d0da650/FLAG892ce6f8d [2018-11-12 19:13:02,647 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede82fb9/01dd21a7cfaa41e492199c089d0da650 [2018-11-12 19:13:02,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:13:02,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:13:02,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:02,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:13:02,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:13:02,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:02" (1/1) ... [2018-11-12 19:13:02,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd8c054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:02, skipping insertion in model container [2018-11-12 19:13:02,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:02" (1/1) ... [2018-11-12 19:13:02,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:13:02,804 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:13:03,676 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:03,680 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:13:03,998 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:04,020 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:13:04,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04 WrapperNode [2018-11-12 19:13:04,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:04,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:04,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:13:04,022 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:13:04,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:04,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:13:04,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:13:04,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:13:04,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (1/1) ... [2018-11-12 19:13:04,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:13:04,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:13:04,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:13:04,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:13:04,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (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 19:13:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:13:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:13:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:13:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:13:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:13:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:13:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:13:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:13:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:13:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:13:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:13:10,662 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:13:10,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:10 BoogieIcfgContainer [2018-11-12 19:13:10,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:13:10,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:13:10,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:13:10,669 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:13:10,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:13:02" (1/3) ... [2018-11-12 19:13:10,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c63bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:10, skipping insertion in model container [2018-11-12 19:13:10,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:04" (2/3) ... [2018-11-12 19:13:10,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c63bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:10, skipping insertion in model container [2018-11-12 19:13:10,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:10" (3/3) ... [2018-11-12 19:13:10,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label26_true-unreach-call.c [2018-11-12 19:13:10,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:13:10,696 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:13:10,716 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:13:10,772 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:13:10,772 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:13:10,772 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:13:10,772 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:13:10,772 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:13:10,773 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:13:10,773 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:13:10,773 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:13:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:13:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-12 19:13:10,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:10,834 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] [2018-11-12 19:13:10,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:10,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1626414812, now seen corresponding path program 1 times [2018-11-12 19:13:10,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:10,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:10,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:10,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:10,894 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:11,397 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-12 19:13:11,429 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 19:13:11,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:11,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:11,433 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:11,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:11,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:11,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:11,460 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:13:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:18,946 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 19:13:18,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:18,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-12 19:13:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:18,975 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 19:13:18,975 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 19:13:18,986 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 19:13:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 19:13:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-12 19:13:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-12 19:13:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-12 19:13:19,136 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 60 [2018-11-12 19:13:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:19,137 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-12 19:13:19,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-12 19:13:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-12 19:13:19,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:19,155 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, 1, 1, 1, 1, 1, 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 19:13:19,156 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:19,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash -30432942, now seen corresponding path program 1 times [2018-11-12 19:13:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:19,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:19,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:19,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:19,161 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:19,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:19,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:13:19,470 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:19,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:13:19,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:13:19,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:13:19,473 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-12 19:13:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:24,483 INFO L93 Difference]: Finished difference Result 3243 states and 5585 transitions. [2018-11-12 19:13:24,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:13:24,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-12 19:13:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:24,513 INFO L225 Difference]: With dead ends: 3243 [2018-11-12 19:13:24,513 INFO L226 Difference]: Without dead ends: 2158 [2018-11-12 19:13:24,520 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 19:13:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2018-11-12 19:13:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2114. [2018-11-12 19:13:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-12 19:13:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-12 19:13:24,608 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 133 [2018-11-12 19:13:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:24,609 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-12 19:13:24,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:13:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-12 19:13:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-12 19:13:24,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:24,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:24,614 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:24,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1329379774, now seen corresponding path program 1 times [2018-11-12 19:13:24,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:24,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:24,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:24,616 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:24,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:24,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:24,841 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:24,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:24,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:24,842 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-12 19:13:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:30,833 INFO L93 Difference]: Finished difference Result 7960 states and 12495 transitions. [2018-11-12 19:13:30,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:30,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-12 19:13:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:30,876 INFO L225 Difference]: With dead ends: 7960 [2018-11-12 19:13:30,876 INFO L226 Difference]: Without dead ends: 5852 [2018-11-12 19:13:30,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2018-11-12 19:13:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5847. [2018-11-12 19:13:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-11-12 19:13:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8247 transitions. [2018-11-12 19:13:31,095 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8247 transitions. Word has length 141 [2018-11-12 19:13:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:31,096 INFO L480 AbstractCegarLoop]: Abstraction has 5847 states and 8247 transitions. [2018-11-12 19:13:31,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8247 transitions. [2018-11-12 19:13:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-12 19:13:31,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:31,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:31,102 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:31,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:31,102 INFO L82 PathProgramCache]: Analyzing trace with hash -386539338, now seen corresponding path program 1 times [2018-11-12 19:13:31,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:31,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:31,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:31,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:31,104 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:31,441 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:13:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:31,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:31,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:13:31,805 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:31,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:13:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:13:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:31,806 INFO L87 Difference]: Start difference. First operand 5847 states and 8247 transitions. Second operand 6 states. [2018-11-12 19:13:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:35,534 INFO L93 Difference]: Finished difference Result 13531 states and 18782 transitions. [2018-11-12 19:13:35,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:13:35,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-12 19:13:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:35,577 INFO L225 Difference]: With dead ends: 13531 [2018-11-12 19:13:35,578 INFO L226 Difference]: Without dead ends: 7690 [2018-11-12 19:13:35,619 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:13:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2018-11-12 19:13:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7626. [2018-11-12 19:13:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7626 states. [2018-11-12 19:13:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 9939 transitions. [2018-11-12 19:13:35,813 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 9939 transitions. Word has length 160 [2018-11-12 19:13:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:35,814 INFO L480 AbstractCegarLoop]: Abstraction has 7626 states and 9939 transitions. [2018-11-12 19:13:35,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:13:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 9939 transitions. [2018-11-12 19:13:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-12 19:13:35,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:35,822 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:35,822 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:35,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:35,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1240653666, now seen corresponding path program 1 times [2018-11-12 19:13:35,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:35,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:35,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:35,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:35,824 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-12 19:13:36,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:36,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:36,219 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:36,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:36,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:36,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:36,223 INFO L87 Difference]: Start difference. First operand 7626 states and 9939 transitions. Second operand 4 states. [2018-11-12 19:13:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:40,704 INFO L93 Difference]: Finished difference Result 24545 states and 32869 transitions. [2018-11-12 19:13:40,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:40,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-12 19:13:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:40,789 INFO L225 Difference]: With dead ends: 24545 [2018-11-12 19:13:40,789 INFO L226 Difference]: Without dead ends: 16925 [2018-11-12 19:13:40,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16925 states. [2018-11-12 19:13:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16925 to 16303. [2018-11-12 19:13:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16303 states. [2018-11-12 19:13:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16303 states to 16303 states and 20254 transitions. [2018-11-12 19:13:41,301 INFO L78 Accepts]: Start accepts. Automaton has 16303 states and 20254 transitions. Word has length 215 [2018-11-12 19:13:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:41,303 INFO L480 AbstractCegarLoop]: Abstraction has 16303 states and 20254 transitions. [2018-11-12 19:13:41,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 16303 states and 20254 transitions. [2018-11-12 19:13:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-12 19:13:41,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:41,318 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, 2, 2, 2, 2, 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] [2018-11-12 19:13:41,319 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:41,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:41,319 INFO L82 PathProgramCache]: Analyzing trace with hash -624386788, now seen corresponding path program 1 times [2018-11-12 19:13:41,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:41,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:41,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:41,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:41,321 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:13:42,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:42,006 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:42,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-12 19:13:42,015 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:42,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:42,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:42,721 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:42,723 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Performed 990 root evaluator evaluations with a maximum evaluation depth of 4. Performed 990 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:13:42,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:42,767 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:13:43,377 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.08% of their original sizes. [2018-11-12 19:13:43,377 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:43,642 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-12 19:13:43,642 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:13:43,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:13:43,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-12 19:13:43,643 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:43,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:13:43,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:13:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:13:43,645 INFO L87 Difference]: Start difference. First operand 16303 states and 20254 transitions. Second operand 8 states. [2018-11-12 19:13:46,954 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:15,884 INFO L93 Difference]: Finished difference Result 32910 states and 40864 transitions. [2018-11-12 19:14:15,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:15,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-11-12 19:14:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:15,945 INFO L225 Difference]: With dead ends: 32910 [2018-11-12 19:14:15,946 INFO L226 Difference]: Without dead ends: 16613 [2018-11-12 19:14:15,997 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:14:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16613 states. [2018-11-12 19:14:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16613 to 16611. [2018-11-12 19:14:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16611 states. [2018-11-12 19:14:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16611 states to 16611 states and 20571 transitions. [2018-11-12 19:14:16,412 INFO L78 Accepts]: Start accepts. Automaton has 16611 states and 20571 transitions. Word has length 241 [2018-11-12 19:14:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:16,414 INFO L480 AbstractCegarLoop]: Abstraction has 16611 states and 20571 transitions. [2018-11-12 19:14:16,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:14:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16611 states and 20571 transitions. [2018-11-12 19:14:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-12 19:14:16,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:16,433 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:16,433 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:16,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:16,434 INFO L82 PathProgramCache]: Analyzing trace with hash 675271699, now seen corresponding path program 1 times [2018-11-12 19:14:16,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:16,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:16,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:16,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:16,436 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:17,514 WARN L179 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-11-12 19:14:18,295 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 19:14:18,681 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 19:14:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 243 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:14:18,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:18,846 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:18,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-12 19:14:18,847 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:18,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:18,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:18,932 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:20,069 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:20,070 INFO L272 AbstractInterpreter]: Visited 109 different actions 727 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 12387 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12387 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 19:14:20,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:20,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:21,086 INFO L227 lantSequenceWeakener]: Weakened 96 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-12 19:14:21,087 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:25,705 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-11-12 19:14:25,706 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:25,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:25,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-11-12 19:14:25,707 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:25,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:14:25,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:14:25,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:14:25,708 INFO L87 Difference]: Start difference. First operand 16611 states and 20571 transitions. Second operand 15 states. [2018-11-12 19:15:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:07,497 INFO L93 Difference]: Finished difference Result 34940 states and 43167 transitions. [2018-11-12 19:15:07,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:15:07,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 337 [2018-11-12 19:15:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:07,592 INFO L225 Difference]: With dead ends: 34940 [2018-11-12 19:15:07,592 INFO L226 Difference]: Without dead ends: 18643 [2018-11-12 19:15:07,675 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 181 SyntacticMatches, 142 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:15:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18643 states. [2018-11-12 19:15:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18643 to 18136. [2018-11-12 19:15:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18136 states. [2018-11-12 19:15:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18136 states to 18136 states and 22162 transitions. [2018-11-12 19:15:08,193 INFO L78 Accepts]: Start accepts. Automaton has 18136 states and 22162 transitions. Word has length 337 [2018-11-12 19:15:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:08,194 INFO L480 AbstractCegarLoop]: Abstraction has 18136 states and 22162 transitions. [2018-11-12 19:15:08,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:15:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 18136 states and 22162 transitions. [2018-11-12 19:15:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-12 19:15:08,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:08,212 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:15:08,213 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:08,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash 860033750, now seen corresponding path program 1 times [2018-11-12 19:15:08,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:08,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:08,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:08,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:08,215 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:15:15,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:15,871 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:15,872 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-12 19:15:15,873 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [644], [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 19:15:15,890 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:15,890 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:16,464 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:15:16,464 INFO L272 AbstractInterpreter]: Visited 295 different actions 584 times. Merged at 5 different actions 5 times. Never widened. Performed 7973 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7973 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 19:15:16,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:16,491 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:17,151 INFO L227 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 82.29% of their original sizes. [2018-11-12 19:15:17,152 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:17,603 INFO L415 sIntCurrentIteration]: We unified 432 AI predicates to 432 [2018-11-12 19:15:17,603 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:17,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:17,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 19:15:17,604 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:17,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:15:17,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:15:17,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:15:17,606 INFO L87 Difference]: Start difference. First operand 18136 states and 22162 transitions. Second operand 21 states. [2018-11-12 19:15:19,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:44,214 INFO L93 Difference]: Finished difference Result 35354 states and 43584 transitions. [2018-11-12 19:15:44,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 19:15:44,214 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 433 [2018-11-12 19:15:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:44,260 INFO L225 Difference]: With dead ends: 35354 [2018-11-12 19:15:44,261 INFO L226 Difference]: Without dead ends: 19057 [2018-11-12 19:15:44,297 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 448 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 19:15:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19057 states. [2018-11-12 19:15:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19057 to 19051. [2018-11-12 19:15:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19051 states. [2018-11-12 19:15:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19051 states to 19051 states and 23157 transitions. [2018-11-12 19:15:44,638 INFO L78 Accepts]: Start accepts. Automaton has 19051 states and 23157 transitions. Word has length 433 [2018-11-12 19:15:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:44,639 INFO L480 AbstractCegarLoop]: Abstraction has 19051 states and 23157 transitions. [2018-11-12 19:15:44,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:15:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 19051 states and 23157 transitions. [2018-11-12 19:15:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-11-12 19:15:44,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:44,664 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:44,665 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:44,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash -198839679, now seen corresponding path program 1 times [2018-11-12 19:15:44,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:44,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:44,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:44,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:44,667 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:45,138 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:15:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 231 proven. 148 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:15:45,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:45,618 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:45,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 504 with the following transitions: [2018-11-12 19:15:45,619 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [644], [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 19:15:45,624 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:45,625 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:45,908 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:47,160 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:47,160 INFO L272 AbstractInterpreter]: Visited 297 different actions 885 times. Merged at 7 different actions 18 times. Never widened. Performed 13003 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13003 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:15:47,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:47,168 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:47,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:47,168 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 19:15:47,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:47,181 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:47,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:15:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:15:47,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:15:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:15:48,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:15:48,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-12 19:15:48,699 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:15:48,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 19:15:48,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 19:15:48,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:15:48,702 INFO L87 Difference]: Start difference. First operand 19051 states and 23157 transitions. Second operand 12 states. [2018-11-12 19:15:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:56,384 INFO L93 Difference]: Finished difference Result 46924 states and 60727 transitions. [2018-11-12 19:15:56,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-12 19:15:56,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 503 [2018-11-12 19:15:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:56,489 INFO L225 Difference]: With dead ends: 46924 [2018-11-12 19:15:56,489 INFO L226 Difference]: Without dead ends: 30627 [2018-11-12 19:15:56,548 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1012 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:15:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30627 states. [2018-11-12 19:15:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30627 to 30297. [2018-11-12 19:15:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30297 states. [2018-11-12 19:15:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30297 states to 30297 states and 36814 transitions. [2018-11-12 19:15:57,504 INFO L78 Accepts]: Start accepts. Automaton has 30297 states and 36814 transitions. Word has length 503 [2018-11-12 19:15:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:57,505 INFO L480 AbstractCegarLoop]: Abstraction has 30297 states and 36814 transitions. [2018-11-12 19:15:57,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 19:15:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30297 states and 36814 transitions. [2018-11-12 19:15:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-11-12 19:15:57,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:57,555 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:57,556 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:57,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1409620573, now seen corresponding path program 1 times [2018-11-12 19:15:57,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:57,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:57,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:57,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:57,559 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 117 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-12 19:15:58,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:58,386 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:58,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 583 with the following transitions: [2018-11-12 19:15:58,387 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [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], [888], [891], [895], [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], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:58,391 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:58,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:58,552 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:59,418 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:15:59,419 INFO L272 AbstractInterpreter]: Visited 285 different actions 1127 times. Merged at 7 different actions 22 times. Never widened. Performed 17946 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17946 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:15:59,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:59,426 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:15:59,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:59,426 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 19:15:59,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:59,437 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:15:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:59,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:16:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:16:00,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:16:00,277 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-12 19:16:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:16:00,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:16:00,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-12 19:16:00,623 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:16:00,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:16:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:16:00,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:16:00,625 INFO L87 Difference]: Start difference. First operand 30297 states and 36814 transitions. Second operand 11 states. [2018-11-12 19:16:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:09,193 INFO L93 Difference]: Finished difference Result 62577 states and 77088 transitions. [2018-11-12 19:16:09,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:16:09,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 582 [2018-11-12 19:16:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:09,288 INFO L225 Difference]: With dead ends: 62577 [2018-11-12 19:16:09,288 INFO L226 Difference]: Without dead ends: 34119 [2018-11-12 19:16:09,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1173 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:16:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34119 states. [2018-11-12 19:16:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34119 to 33724. [2018-11-12 19:16:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33724 states. [2018-11-12 19:16:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33724 states to 33724 states and 38056 transitions. [2018-11-12 19:16:09,996 INFO L78 Accepts]: Start accepts. Automaton has 33724 states and 38056 transitions. Word has length 582 [2018-11-12 19:16:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:09,997 INFO L480 AbstractCegarLoop]: Abstraction has 33724 states and 38056 transitions. [2018-11-12 19:16:10,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:16:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33724 states and 38056 transitions. [2018-11-12 19:16:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-11-12 19:16:10,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:10,037 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:10,038 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:10,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:10,038 INFO L82 PathProgramCache]: Analyzing trace with hash -545268041, now seen corresponding path program 1 times [2018-11-12 19:16:10,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:10,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:10,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:10,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:10,039 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:10,831 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-11-12 19:16:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 333 proven. 137 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-11-12 19:16:11,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:11,626 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:16:11,627 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 613 with the following transitions: [2018-11-12 19:16:11,627 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], [401], [409], [417], [425], [433], [441], [449], [453], [455], [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], [691], [692], [696], [707], [711], [714], [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], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:16:11,631 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:16:11,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:16:11,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:16:12,521 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:16:12,522 INFO L272 AbstractInterpreter]: Visited 286 different actions 1136 times. Merged at 7 different actions 28 times. Never widened. Performed 20377 root evaluator evaluations with a maximum evaluation depth of 6. Performed 20377 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:16:12,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:12,561 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:16:12,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:12,561 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:16:12,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:12,575 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:16:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:12,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:16:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 467 proven. 41 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-11-12 19:16:13,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:16:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 227 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 19:16:15,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:16:15,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 23 [2018-11-12 19:16:15,362 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:16:15,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:16:15,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:16:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:16:15,363 INFO L87 Difference]: Start difference. First operand 33724 states and 38056 transitions. Second operand 18 states. [2018-11-12 19:16:29,864 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 16 Received shutdown request... [2018-11-12 19:16:31,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-12 19:16:31,457 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:16:31,465 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:16:31,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:16:31 BoogieIcfgContainer [2018-11-12 19:16:31,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:16:31,466 INFO L168 Benchmark]: Toolchain (without parser) took 208804.82 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -863.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,467 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:16:31,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1354.66 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 247.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,470 INFO L168 Benchmark]: Boogie Preprocessor took 164.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,470 INFO L168 Benchmark]: RCFGBuilder took 6230.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 283.3 MB). Peak memory consumption was 283.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,471 INFO L168 Benchmark]: TraceAbstraction took 200800.30 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -400.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:16:31,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1354.66 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 247.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 164.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6230.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 283.3 MB). Peak memory consumption was 283.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200800.30 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -400.4 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: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (33724states) and FLOYD_HOARE automaton (currently 73 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (18857 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 200.7s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 160.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3193 SDtfs, 31897 SDslu, 3896 SDs, 0 SdLazy, 45575 SolverSat, 6345 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 4666 GetRequests, 4293 SyntacticMatches, 154 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33724occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9976723675798133 AbsIntWeakeningRatio, 0.08333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 15.23015873015873 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 1998 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 5114 NumberOfCodeBlocks, 5114 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 6794 ConstructedInterpolants, 0 QuantifiedInterpolants, 15506194 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2394 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 5026/6079 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown