java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:10:04,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:10:04,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:10:04,814 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:10:04,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:10:04,815 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:10:04,818 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:10:04,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:10:04,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:10:04,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:10:04,827 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:10:04,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:10:04,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:10:04,830 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:10:04,831 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:10:04,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:10:04,842 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:10:04,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:10:04,853 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:10:04,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:10:04,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:10:04,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:10:04,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 08:10:04,874 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:10:04,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:10:04,876 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:10:04,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:10:04,877 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:10:04,907 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:10:04,908 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:10:04,909 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:10:04,909 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:10:04,910 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:10:04,910 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:10:04,910 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:10:04,910 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:10:04,910 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:10:04,911 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:10:04,912 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:10:04,912 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:10:04,912 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:10:04,912 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:10:04,913 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:10:04,913 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:10:04,913 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:10:04,914 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:10:04,914 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:10:04,914 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:10:04,914 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:10:04,914 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:10:04,915 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:10:04,915 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:10:04,915 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:10:04,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:10:04,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:10:04,917 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:10:04,917 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:10:04,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:10:04,918 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:10:04,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:10:04,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:10:04,918 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:10:04,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:10:04,919 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:10:04,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:10:05,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:10:05,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:10:05,012 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:10:05,013 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:10:05,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-27 08:10:05,077 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cce4e9eb/c96e0358747a449c809b49736bf211e2/FLAG8d68a4369 [2018-10-27 08:10:05,733 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:10:05,734 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-10-27 08:10:05,752 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cce4e9eb/c96e0358747a449c809b49736bf211e2/FLAG8d68a4369 [2018-10-27 08:10:05,768 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cce4e9eb/c96e0358747a449c809b49736bf211e2 [2018-10-27 08:10:05,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:10:05,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:10:05,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:10:05,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:10:05,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:10:05,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:05" (1/1) ... [2018-10-27 08:10:05,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:05, skipping insertion in model container [2018-10-27 08:10:05,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:05" (1/1) ... [2018-10-27 08:10:05,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:10:05,896 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:10:06,787 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:10:06,792 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:10:07,116 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:10:07,137 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:10:07,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07 WrapperNode [2018-10-27 08:10:07,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:10:07,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:10:07,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:10:07,139 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:10:07,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:10:07,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:10:07,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:10:07,556 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:10:07,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... [2018-10-27 08:10:07,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:10:07,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:10:07,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:10:07,746 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:10:07,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:10:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:10:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:10:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:10:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:10:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:10:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:10:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:10:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:10:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:10:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:10:15,671 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:10:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:15 BoogieIcfgContainer [2018-10-27 08:10:15,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:10:15,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:10:15,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:10:15,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:10:15,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:10:05" (1/3) ... [2018-10-27 08:10:15,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45164ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:15, skipping insertion in model container [2018-10-27 08:10:15,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:07" (2/3) ... [2018-10-27 08:10:15,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45164ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:15, skipping insertion in model container [2018-10-27 08:10:15,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:15" (3/3) ... [2018-10-27 08:10:15,683 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-10-27 08:10:15,693 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:10:15,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:10:15,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:10:15,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:10:15,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:10:15,761 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:10:15,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:10:15,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:10:15,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:10:15,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:10:15,761 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:10:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:10:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-27 08:10:15,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:15,805 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] [2018-10-27 08:10:15,807 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:15,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:15,814 INFO L82 PathProgramCache]: Analyzing trace with hash -98869727, now seen corresponding path program 1 times [2018-10-27 08:10:15,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:15,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:15,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:15,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:15,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:10:16,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:10:16,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:10:16,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:16,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:10:16,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:10:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:16,322 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:10:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:25,026 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 08:10:25,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:10:25,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-27 08:10:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:25,061 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 08:10:25,061 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 08:10:25,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 08:10:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-27 08:10:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-27 08:10:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-27 08:10:25,197 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-10-27 08:10:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:25,197 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-27 08:10:25,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:10:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-27 08:10:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 08:10:25,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:25,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:25,206 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:25,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2025595060, now seen corresponding path program 1 times [2018-10-27 08:10:25,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:25,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:25,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:25,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:25,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:10:25,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:10:25,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:10:25,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:25,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:10:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:10:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:10:25,458 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-27 08:10:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:34,686 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-27 08:10:34,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:10:34,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-27 08:10:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:34,711 INFO L225 Difference]: With dead ends: 3240 [2018-10-27 08:10:34,711 INFO L226 Difference]: Without dead ends: 2155 [2018-10-27 08:10:34,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:10:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-27 08:10:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-27 08:10:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-27 08:10:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-27 08:10:34,830 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 114 [2018-10-27 08:10:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:34,830 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-27 08:10:34,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:10:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-27 08:10:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-27 08:10:34,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:34,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:34,844 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:34,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash 565874524, now seen corresponding path program 1 times [2018-10-27 08:10:34,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:34,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:34,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:34,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:34,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:10:35,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:10:35,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:10:35,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:35,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:10:35,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:10:35,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:35,046 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-27 08:10:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:41,521 INFO L93 Difference]: Finished difference Result 7958 states and 12498 transitions. [2018-10-27 08:10:41,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:10:41,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-27 08:10:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:41,571 INFO L225 Difference]: With dead ends: 7958 [2018-10-27 08:10:41,571 INFO L226 Difference]: Without dead ends: 5850 [2018-10-27 08:10:41,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2018-10-27 08:10:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5847. [2018-10-27 08:10:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-10-27 08:10:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8223 transitions. [2018-10-27 08:10:41,787 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8223 transitions. Word has length 122 [2018-10-27 08:10:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:41,788 INFO L481 AbstractCegarLoop]: Abstraction has 5847 states and 8223 transitions. [2018-10-27 08:10:41,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:10:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8223 transitions. [2018-10-27 08:10:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 08:10:41,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:41,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:41,798 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:41,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2101547042, now seen corresponding path program 1 times [2018-10-27 08:10:41,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:41,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:41,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:41,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:41,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:10:42,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:42,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:42,290 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-10-27 08:10:42,293 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [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], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:42,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:42,346 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:42,865 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:10:42,870 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:10:42,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:42,915 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:10:43,383 INFO L227 lantSequenceWeakener]: Weakened 147 states. On average, predicates are now at 77.97% of their original sizes. [2018-10-27 08:10:43,384 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:10:43,640 INFO L415 sIntCurrentIteration]: We unified 152 AI predicates to 152 [2018-10-27 08:10:43,641 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:10:43,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:10:43,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:10:43,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:43,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:10:43,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:10:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:10:43,644 INFO L87 Difference]: Start difference. First operand 5847 states and 8223 transitions. Second operand 6 states. [2018-10-27 08:11:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:58,961 INFO L93 Difference]: Finished difference Result 11998 states and 16819 transitions. [2018-10-27 08:11:58,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:11:58,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-27 08:11:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:58,994 INFO L225 Difference]: With dead ends: 11998 [2018-10-27 08:11:58,995 INFO L226 Difference]: Without dead ends: 6157 [2018-10-27 08:11:59,025 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:11:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2018-10-27 08:11:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6155. [2018-10-27 08:11:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6155 states. [2018-10-27 08:11:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 8539 transitions. [2018-10-27 08:11:59,176 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 8539 transitions. Word has length 153 [2018-10-27 08:11:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:59,177 INFO L481 AbstractCegarLoop]: Abstraction has 6155 states and 8539 transitions. [2018-10-27 08:11:59,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:11:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 8539 transitions. [2018-10-27 08:11:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-27 08:11:59,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:59,183 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:11:59,184 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:59,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1992816428, now seen corresponding path program 1 times [2018-10-27 08:11:59,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:59,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:59,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:59,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:59,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:00,271 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 08:12:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:00,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:00,528 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:00,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-27 08:12:00,529 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [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], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:12:00,536 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:00,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:00,826 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:12:00,827 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:12:00,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:00,863 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:12:01,120 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 83.77% of their original sizes. [2018-10-27 08:12:01,120 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:12:01,285 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-10-27 08:12:01,285 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:12:01,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:12:01,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-10-27 08:12:01,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:01,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:12:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:12:01,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:12:01,288 INFO L87 Difference]: Start difference. First operand 6155 states and 8539 transitions. Second operand 9 states. [2018-10-27 08:12:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:41,137 INFO L93 Difference]: Finished difference Result 12316 states and 17148 transitions. [2018-10-27 08:12:41,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:12:41,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2018-10-27 08:12:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:41,168 INFO L225 Difference]: With dead ends: 12316 [2018-10-27 08:12:41,168 INFO L226 Difference]: Without dead ends: 6475 [2018-10-27 08:12:41,193 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:12:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2018-10-27 08:12:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6472. [2018-10-27 08:12:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6472 states. [2018-10-27 08:12:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6472 states to 6472 states and 8880 transitions. [2018-10-27 08:12:41,363 INFO L78 Accepts]: Start accepts. Automaton has 6472 states and 8880 transitions. Word has length 249 [2018-10-27 08:12:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:41,364 INFO L481 AbstractCegarLoop]: Abstraction has 6472 states and 8880 transitions. [2018-10-27 08:12:41,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:12:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6472 states and 8880 transitions. [2018-10-27 08:12:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-10-27 08:12:41,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:41,376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:12:41,377 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:41,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash 290906884, now seen corresponding path program 1 times [2018-10-27 08:12:41,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:41,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:41,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:41,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:41,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:41,786 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 08:12:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:12:41,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:12:41,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:12:41,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:41,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:12:41,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:12:41,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:41,873 INFO L87 Difference]: Start difference. First operand 6472 states and 8880 transitions. Second operand 4 states. [2018-10-27 08:12:47,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:47,497 INFO L93 Difference]: Finished difference Result 23143 states and 33703 transitions. [2018-10-27 08:12:47,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:12:47,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 389 [2018-10-27 08:12:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:47,590 INFO L225 Difference]: With dead ends: 23143 [2018-10-27 08:12:47,591 INFO L226 Difference]: Without dead ends: 16985 [2018-10-27 08:12:47,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16985 states. [2018-10-27 08:12:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16985 to 16985. [2018-10-27 08:12:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16985 states. [2018-10-27 08:12:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 22484 transitions. [2018-10-27 08:12:48,100 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 22484 transitions. Word has length 389 [2018-10-27 08:12:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:48,101 INFO L481 AbstractCegarLoop]: Abstraction has 16985 states and 22484 transitions. [2018-10-27 08:12:48,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:12:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 22484 transitions. [2018-10-27 08:12:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-10-27 08:12:48,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:48,129 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:12:48,129 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:48,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:48,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1942398566, now seen corresponding path program 1 times [2018-10-27 08:12:48,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:48,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:48,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-10-27 08:12:48,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:48,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:48,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 462 with the following transitions: [2018-10-27 08:12:48,785 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [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], [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], [950], [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] [2018-10-27 08:12:48,795 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:48,796 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:49,651 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:12:49,651 INFO L272 AbstractInterpreter]: Visited 284 different actions 1130 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:12:49,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:49,659 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:12:49,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:49,660 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:12:49,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:49,669 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:12:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:49,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:12:50,226 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 08:12:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:50,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:12:50,790 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-27 08:12:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:51,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:12:51,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 08:12:51,795 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:12:51,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:12:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:12:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:12:51,798 INFO L87 Difference]: Start difference. First operand 16985 states and 22484 transitions. Second operand 10 states. [2018-10-27 08:13:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:24,970 INFO L93 Difference]: Finished difference Result 68857 states and 100276 transitions. [2018-10-27 08:13:24,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 08:13:24,974 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 461 [2018-10-27 08:13:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:25,302 INFO L225 Difference]: With dead ends: 68857 [2018-10-27 08:13:25,303 INFO L226 Difference]: Without dead ends: 53119 [2018-10-27 08:13:25,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 936 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=576, Invalid=2504, Unknown=0, NotChecked=0, Total=3080 [2018-10-27 08:13:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53119 states. [2018-10-27 08:13:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53119 to 52782. [2018-10-27 08:13:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52782 states. [2018-10-27 08:13:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52782 states to 52782 states and 69816 transitions. [2018-10-27 08:13:27,270 INFO L78 Accepts]: Start accepts. Automaton has 52782 states and 69816 transitions. Word has length 461 [2018-10-27 08:13:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:27,272 INFO L481 AbstractCegarLoop]: Abstraction has 52782 states and 69816 transitions. [2018-10-27 08:13:27,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:13:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 52782 states and 69816 transitions. [2018-10-27 08:13:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-10-27 08:13:27,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:27,491 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:13:27,491 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:27,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:27,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1890786148, now seen corresponding path program 1 times [2018-10-27 08:13:27,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:27,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:27,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:27,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:27,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 317 proven. 84 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2018-10-27 08:13:28,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:28,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:28,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 727 with the following transitions: [2018-10-27 08:13:28,577 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [29], [33], [36], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [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], [1209], [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], [1624], [1628], [1632], [1634], [1635], [1639], [1643], [1649], [1653], [1655], [1660], [1661], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:13:28,591 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:28,591 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:30,319 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:13:30,319 INFO L272 AbstractInterpreter]: Visited 314 different actions 1537 times. Merged at 8 different actions 32 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:13:30,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:30,357 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:13:30,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:30,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:13:30,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:30,373 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:30,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 08:13:31,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:13:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 317 proven. 84 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2018-10-27 08:13:33,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:13:33,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:13:33,090 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:13:33,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:13:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:13:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:13:33,094 INFO L87 Difference]: Start difference. First operand 52782 states and 69816 transitions. Second operand 9 states. [2018-10-27 08:13:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:44,557 INFO L93 Difference]: Finished difference Result 104653 states and 147477 transitions. [2018-10-27 08:13:44,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:13:44,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 726 [2018-10-27 08:13:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:44,876 INFO L225 Difference]: With dead ends: 104653 [2018-10-27 08:13:44,876 INFO L226 Difference]: Without dead ends: 53118 [2018-10-27 08:13:45,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1458 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-27 08:13:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2018-10-27 08:13:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 53067. [2018-10-27 08:13:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53067 states. [2018-10-27 08:13:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53067 states to 53067 states and 71020 transitions. [2018-10-27 08:13:46,993 INFO L78 Accepts]: Start accepts. Automaton has 53067 states and 71020 transitions. Word has length 726 [2018-10-27 08:13:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:46,994 INFO L481 AbstractCegarLoop]: Abstraction has 53067 states and 71020 transitions. [2018-10-27 08:13:46,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:13:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 53067 states and 71020 transitions. [2018-10-27 08:13:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-10-27 08:13:47,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:47,068 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:13:47,068 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:47,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash -257133123, now seen corresponding path program 1 times [2018-10-27 08:13:47,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:47,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:47,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:47,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:47,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:13:48,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:48,054 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:48,055 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 730 with the following transitions: [2018-10-27 08:13:48,055 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [29], [33], [36], [73], [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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [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], [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], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1624], [1628], [1632], [1634], [1635], [1639], [1643], [1649], [1653], [1655], [1660], [1661], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:13:48,061 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:48,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 08:13:52,104 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:13:52,105 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:13:52,105 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:13:52,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:52,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:13:52,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:52,114 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:52,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:52,338 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:13:52,539 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:13:52,540 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:13:52,545 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:13:52,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:13:52 BoogieIcfgContainer [2018-10-27 08:13:52,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:13:52,547 INFO L168 Benchmark]: Toolchain (without parser) took 226766.11 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -355.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,548 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:13:52,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1355.40 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: 97.9 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 416.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,551 INFO L168 Benchmark]: Boogie Preprocessor took 189.58 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,552 INFO L168 Benchmark]: RCFGBuilder took 7928.30 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: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,554 INFO L168 Benchmark]: TraceAbstraction took 216870.38 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 80.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 08:13:52,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1355.40 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: 97.9 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 416.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.58 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7928.30 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: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216870.38 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 80.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was analyzing trace of length 730 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 216.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 191.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2568 SDtfs, 15599 SDslu, 3047 SDs, 0 SdLazy, 27884 SolverSat, 6384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2903 GetRequests, 2796 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53067occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.6s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9969967839607932 AbsIntWeakeningRatio, 0.115 AbsIntAvgWeakeningVarsNumRemoved, 15.285 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 460 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3442 NumberOfCodeBlocks, 3442 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4617 ConstructedInterpolants, 0 QuantifiedInterpolants, 5575449 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1644 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 3140/3421 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown