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/Problem11_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:12:47,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:12:47,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:12:47,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:12:47,851 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:12:47,852 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:12:47,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:12:47,855 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:12:47,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:12:47,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:12:47,859 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:12:47,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:12:47,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:12:47,862 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:12:47,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:12:47,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:12:47,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:12:47,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:12:47,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:12:47,871 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:12:47,872 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:12:47,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:12:47,876 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:12:47,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:12:47,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:12:47,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:12:47,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:12:47,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:12:47,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:12:47,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:12:47,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:12:47,882 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:12:47,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:12:47,882 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:12:47,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:12:47,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:12:47,885 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 16:12:47,909 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:12:47,909 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:12:47,910 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:12:47,910 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:12:47,910 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:12:47,911 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:12:47,911 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:12:47,911 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:12:47,911 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:12:47,912 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:12:47,912 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:12:47,912 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:12:47,912 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:12:47,913 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:12:47,914 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:12:47,915 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:12:47,915 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:12:47,915 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:12:47,915 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:12:47,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:12:47,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:12:47,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:12:47,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:12:47,918 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:12:47,918 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:12:47,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:12:47,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:12:47,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:12:47,919 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:12:47,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:12:47,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:12:47,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:12:47,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:12:47,998 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:12:47,998 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:12:47,999 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-11-12 16:12:48,069 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d148792/de0802d66c194eb5bc5cfb46587fc561/FLAG079b7664e [2018-11-12 16:12:48,682 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:12:48,683 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-11-12 16:12:48,703 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d148792/de0802d66c194eb5bc5cfb46587fc561/FLAG079b7664e [2018-11-12 16:12:48,723 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d148792/de0802d66c194eb5bc5cfb46587fc561 [2018-11-12 16:12:48,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:12:48,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:12:48,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:12:48,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:12:48,743 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:12:48,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:12:48" (1/1) ... [2018-11-12 16:12:48,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4580dabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:48, skipping insertion in model container [2018-11-12 16:12:48,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:12:48" (1/1) ... [2018-11-12 16:12:48,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:12:48,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:12:49,465 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:12:49,469 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:12:49,641 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:12:49,661 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:12:49,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49 WrapperNode [2018-11-12 16:12:49,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:12:49,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:12:49,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:12:49,663 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:12:49,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:12:49,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:12:49,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:12:49,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:12:49,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (1/1) ... [2018-11-12 16:12:49,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:12:49,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:12:49,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:12:49,963 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:12:49,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (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 16:12:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:12:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:12:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:12:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:12:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:12:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:12:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:12:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:12:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:12:54,601 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:12:54,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:12:54 BoogieIcfgContainer [2018-11-12 16:12:54,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:12:54,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:12:54,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:12:54,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:12:54,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:12:48" (1/3) ... [2018-11-12 16:12:54,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542b0f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:12:54, skipping insertion in model container [2018-11-12 16:12:54,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:12:49" (2/3) ... [2018-11-12 16:12:54,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542b0f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:12:54, skipping insertion in model container [2018-11-12 16:12:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:12:54" (3/3) ... [2018-11-12 16:12:54,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label34_false-unreach-call.c [2018-11-12 16:12:54,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:12:54,631 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:12:54,647 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:12:54,696 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:12:54,696 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:12:54,697 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:12:54,697 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:12:54,697 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:12:54,697 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:12:54,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:12:54,698 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:12:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 16:12:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-12 16:12:54,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:12:54,739 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:12:54,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:12:54,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:12:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash -156689455, now seen corresponding path program 1 times [2018-11-12 16:12:54,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:12:54,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:12:54,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:12:54,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:12:54,803 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:12:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:12:55,124 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 16:12:55,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:12:55,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:12:55,127 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:12:55,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:12:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:12:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:12:55,148 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 16:12:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:12:58,581 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-11-12 16:12:58,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:12:58,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-12 16:12:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:12:58,605 INFO L225 Difference]: With dead ends: 998 [2018-11-12 16:12:58,605 INFO L226 Difference]: Without dead ends: 699 [2018-11-12 16:12:58,613 INFO L604 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 [2018-11-12 16:12:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-12 16:12:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-11-12 16:12:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-11-12 16:12:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-11-12 16:12:58,722 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 15 [2018-11-12 16:12:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:12:58,723 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-11-12 16:12:58,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:12:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-11-12 16:12:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-12 16:12:58,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:12:58,729 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:12:58,729 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:12:58,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:12:58,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2034411636, now seen corresponding path program 1 times [2018-11-12 16:12:58,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:12:58,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:12:58,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:12:58,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:12:58,732 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:12:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:12:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:12:59,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:12:59,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 16:12:59,287 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:12:59,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:12:59,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:12:59,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:12:59,290 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 7 states. [2018-11-12 16:13:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:13:05,189 INFO L93 Difference]: Finished difference Result 2544 states and 4231 transitions. [2018-11-12 16:13:05,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 16:13:05,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2018-11-12 16:13:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:13:05,205 INFO L225 Difference]: With dead ends: 2544 [2018-11-12 16:13:05,206 INFO L226 Difference]: Without dead ends: 1857 [2018-11-12 16:13:05,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-12 16:13:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2018-11-12 16:13:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1430. [2018-11-12 16:13:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2018-11-12 16:13:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2146 transitions. [2018-11-12 16:13:05,292 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2146 transitions. Word has length 89 [2018-11-12 16:13:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:13:05,293 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 2146 transitions. [2018-11-12 16:13:05,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:13:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2146 transitions. [2018-11-12 16:13:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-12 16:13:05,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:13:05,305 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:13:05,305 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:13:05,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1290518434, now seen corresponding path program 1 times [2018-11-12 16:13:05,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:13:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:05,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:13:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:05,307 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:13:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:13:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:13:05,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:13:05,545 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:13:05,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-11-12 16:13:05,548 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:13:05,591 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:13:05,591 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:13:06,034 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:13:06,036 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Performed 815 root evaluator evaluations with a maximum evaluation depth of 6. Performed 815 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 16:13:06,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:06,072 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:13:06,641 INFO L227 lantSequenceWeakener]: Weakened 153 states. On average, predicates are now at 72.81% of their original sizes. [2018-11-12 16:13:06,641 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:13:06,788 INFO L415 sIntCurrentIteration]: We unified 161 AI predicates to 161 [2018-11-12 16:13:06,788 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:13:06,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:13:06,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 16:13:06,789 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:13:06,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:13:06,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:13:06,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:13:06,791 INFO L87 Difference]: Start difference. First operand 1430 states and 2146 transitions. Second operand 7 states. [2018-11-12 16:13:10,208 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:13:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:13:18,491 INFO L93 Difference]: Finished difference Result 3046 states and 4498 transitions. [2018-11-12 16:13:18,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:13:18,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2018-11-12 16:13:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:13:18,503 INFO L225 Difference]: With dead ends: 3046 [2018-11-12 16:13:18,503 INFO L226 Difference]: Without dead ends: 1622 [2018-11-12 16:13:18,507 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:13:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2018-11-12 16:13:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1620. [2018-11-12 16:13:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2018-11-12 16:13:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2345 transitions. [2018-11-12 16:13:18,556 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2345 transitions. Word has length 162 [2018-11-12 16:13:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:13:18,557 INFO L480 AbstractCegarLoop]: Abstraction has 1620 states and 2345 transitions. [2018-11-12 16:13:18,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:13:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2345 transitions. [2018-11-12 16:13:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-12 16:13:18,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:13:18,560 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:13:18,566 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:13:18,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1546151690, now seen corresponding path program 1 times [2018-11-12 16:13:18,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:13:18,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:18,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:13:18,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:18,568 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:13:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:13:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:13:19,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:13:19,092 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:13:19,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 164 with the following transitions: [2018-11-12 16:13:19,093 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:13:19,103 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:13:19,103 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:13:19,287 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:13:20,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:13:20,521 INFO L272 AbstractInterpreter]: Visited 155 different actions 452 times. Merged at 5 different actions 9 times. Never widened. Performed 8507 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8507 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 16:13:20,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:20,558 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:13:21,064 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 73.29% of their original sizes. [2018-11-12 16:13:21,065 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:13:21,805 INFO L415 sIntCurrentIteration]: We unified 162 AI predicates to 162 [2018-11-12 16:13:21,805 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:13:21,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:13:21,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [5] total 22 [2018-11-12 16:13:21,806 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:13:21,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:13:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:13:21,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:13:21,808 INFO L87 Difference]: Start difference. First operand 1620 states and 2345 transitions. Second operand 19 states. [2018-11-12 16:13:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:13:54,221 INFO L93 Difference]: Finished difference Result 3957 states and 6268 transitions. [2018-11-12 16:13:54,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-12 16:13:54,221 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 163 [2018-11-12 16:13:54,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:13:54,239 INFO L225 Difference]: With dead ends: 3957 [2018-11-12 16:13:54,239 INFO L226 Difference]: Without dead ends: 2533 [2018-11-12 16:13:54,248 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=374, Invalid=1606, Unknown=0, NotChecked=0, Total=1980 [2018-11-12 16:13:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2018-11-12 16:13:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2394. [2018-11-12 16:13:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2394 states. [2018-11-12 16:13:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3216 transitions. [2018-11-12 16:13:54,319 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3216 transitions. Word has length 163 [2018-11-12 16:13:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:13:54,320 INFO L480 AbstractCegarLoop]: Abstraction has 2394 states and 3216 transitions. [2018-11-12 16:13:54,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:13:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3216 transitions. [2018-11-12 16:13:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-12 16:13:54,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:13:54,323 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:54,324 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:13:54,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash 429489092, now seen corresponding path program 1 times [2018-11-12 16:13:54,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:13:54,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:54,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:13:54,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:13:54,325 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:13:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:13:54,805 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 16:13:55,412 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:13:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:13:55,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:13:55,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:13:55,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-12 16:13:55,635 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:13:55,640 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:13:55,640 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:13:55,868 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:13:56,735 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:13:56,735 INFO L272 AbstractInterpreter]: Visited 125 different actions 246 times. Merged at 5 different actions 7 times. Never widened. Performed 4297 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4297 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 16:13:56,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:13:56,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:13:57,070 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 72.93% of their original sizes. [2018-11-12 16:13:57,070 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:13:57,219 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-11-12 16:13:57,219 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:13:57,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:13:57,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2018-11-12 16:13:57,220 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:13:57,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:13:57,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:13:57,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:13:57,222 INFO L87 Difference]: Start difference. First operand 2394 states and 3216 transitions. Second operand 11 states. [2018-11-12 16:14:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:14:10,682 INFO L93 Difference]: Finished difference Result 4012 states and 5714 transitions. [2018-11-12 16:14:10,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 16:14:10,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 206 [2018-11-12 16:14:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:14:10,694 INFO L225 Difference]: With dead ends: 4012 [2018-11-12 16:14:10,694 INFO L226 Difference]: Without dead ends: 2588 [2018-11-12 16:14:10,699 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:14:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2018-11-12 16:14:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2585. [2018-11-12 16:14:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2018-11-12 16:14:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3426 transitions. [2018-11-12 16:14:10,767 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3426 transitions. Word has length 206 [2018-11-12 16:14:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:14:10,767 INFO L480 AbstractCegarLoop]: Abstraction has 2585 states and 3426 transitions. [2018-11-12 16:14:10,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:14:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3426 transitions. [2018-11-12 16:14:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-12 16:14:10,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:14:10,775 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:10,775 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:14:10,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash 886142584, now seen corresponding path program 1 times [2018-11-12 16:14:10,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:14:10,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:10,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:14:10,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:10,777 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:14:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:14:11,254 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 16:14:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:14:11,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:14:11,615 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:14:11,615 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-12 16:14:11,616 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:14:11,620 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:14:11,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:14:11,719 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:14:11,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:14:11,969 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Performed 5092 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5092 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 16:14:11,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:11,978 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:14:12,228 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 72.94% of their original sizes. [2018-11-12 16:14:12,229 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:14:12,352 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-12 16:14:12,353 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:14:12,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:14:12,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2018-11-12 16:14:12,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:14:12,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:14:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:14:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:14:12,354 INFO L87 Difference]: Start difference. First operand 2585 states and 3426 transitions. Second operand 11 states. [2018-11-12 16:14:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:14:21,311 INFO L93 Difference]: Finished difference Result 5171 states and 7169 transitions. [2018-11-12 16:14:21,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:14:21,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2018-11-12 16:14:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:14:21,323 INFO L225 Difference]: With dead ends: 5171 [2018-11-12 16:14:21,324 INFO L226 Difference]: Without dead ends: 3171 [2018-11-12 16:14:21,330 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:14:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2018-11-12 16:14:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3162. [2018-11-12 16:14:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2018-11-12 16:14:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4087 transitions. [2018-11-12 16:14:21,401 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4087 transitions. Word has length 216 [2018-11-12 16:14:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:14:21,402 INFO L480 AbstractCegarLoop]: Abstraction has 3162 states and 4087 transitions. [2018-11-12 16:14:21,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:14:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4087 transitions. [2018-11-12 16:14:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-11-12 16:14:21,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:14:21,406 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:21,406 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:14:21,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:21,406 INFO L82 PathProgramCache]: Analyzing trace with hash -408437053, now seen corresponding path program 1 times [2018-11-12 16:14:21,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:14:21,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:21,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:14:21,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:21,408 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:14:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:14:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 16:14:21,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:14:21,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:14:21,565 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:14:21,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:14:21,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:14:21,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:14:21,566 INFO L87 Difference]: Start difference. First operand 3162 states and 4087 transitions. Second operand 3 states. [2018-11-12 16:14:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:14:22,763 INFO L93 Difference]: Finished difference Result 5833 states and 8263 transitions. [2018-11-12 16:14:22,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:14:22,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-11-12 16:14:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:14:22,784 INFO L225 Difference]: With dead ends: 5833 [2018-11-12 16:14:22,785 INFO L226 Difference]: Without dead ends: 4409 [2018-11-12 16:14:22,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:14:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2018-11-12 16:14:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4400. [2018-11-12 16:14:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-11-12 16:14:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5610 transitions. [2018-11-12 16:14:22,905 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5610 transitions. Word has length 217 [2018-11-12 16:14:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:14:22,905 INFO L480 AbstractCegarLoop]: Abstraction has 4400 states and 5610 transitions. [2018-11-12 16:14:22,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:14:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5610 transitions. [2018-11-12 16:14:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-12 16:14:22,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:14:22,910 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:22,911 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:14:22,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1519222672, now seen corresponding path program 1 times [2018-11-12 16:14:22,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:14:22,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:22,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:14:22,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:22,913 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:14:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:14:23,842 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 16:14:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:14:23,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:14:23,967 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:14:23,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-11-12 16:14:23,968 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:14:23,971 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:14:23,971 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:14:24,064 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:14:24,479 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:14:24,480 INFO L272 AbstractInterpreter]: Visited 140 different actions 407 times. Merged at 5 different actions 9 times. Never widened. Performed 6248 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6248 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 16:14:24,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:24,488 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:14:24,823 INFO L227 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 72.99% of their original sizes. [2018-11-12 16:14:24,823 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:14:24,956 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-11-12 16:14:24,956 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:14:24,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:14:24,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2018-11-12 16:14:24,957 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:14:24,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 16:14:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 16:14:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 16:14:24,959 INFO L87 Difference]: Start difference. First operand 4400 states and 5610 transitions. Second operand 13 states. [2018-11-12 16:14:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:14:43,159 INFO L93 Difference]: Finished difference Result 7456 states and 9838 transitions. [2018-11-12 16:14:43,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:14:43,160 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 221 [2018-11-12 16:14:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:14:43,178 INFO L225 Difference]: With dead ends: 7456 [2018-11-12 16:14:43,178 INFO L226 Difference]: Without dead ends: 4794 [2018-11-12 16:14:43,187 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:14:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2018-11-12 16:14:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4790. [2018-11-12 16:14:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4790 states. [2018-11-12 16:14:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 6022 transitions. [2018-11-12 16:14:43,299 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 6022 transitions. Word has length 221 [2018-11-12 16:14:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:14:43,300 INFO L480 AbstractCegarLoop]: Abstraction has 4790 states and 6022 transitions. [2018-11-12 16:14:43,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 16:14:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 6022 transitions. [2018-11-12 16:14:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-12 16:14:43,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:14:43,304 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:43,304 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:14:43,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash -303712540, now seen corresponding path program 1 times [2018-11-12 16:14:43,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:14:43,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:43,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:14:43,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:43,306 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:14:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:14:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-12 16:14:43,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:14:43,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:14:43,465 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:14:43,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:14:43,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:14:43,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:14:43,466 INFO L87 Difference]: Start difference. First operand 4790 states and 6022 transitions. Second operand 3 states. [2018-11-12 16:14:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:14:45,108 INFO L93 Difference]: Finished difference Result 10068 states and 13391 transitions. [2018-11-12 16:14:45,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:14:45,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2018-11-12 16:14:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:14:45,134 INFO L225 Difference]: With dead ends: 10068 [2018-11-12 16:14:45,134 INFO L226 Difference]: Without dead ends: 6446 [2018-11-12 16:14:45,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:14:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6446 states. [2018-11-12 16:14:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6446 to 6429. [2018-11-12 16:14:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6429 states. [2018-11-12 16:14:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 8091 transitions. [2018-11-12 16:14:45,287 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 8091 transitions. Word has length 222 [2018-11-12 16:14:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:14:45,288 INFO L480 AbstractCegarLoop]: Abstraction has 6429 states and 8091 transitions. [2018-11-12 16:14:45,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:14:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 8091 transitions. [2018-11-12 16:14:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-12 16:14:45,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:14:45,293 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:45,293 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:14:45,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash 512206020, now seen corresponding path program 1 times [2018-11-12 16:14:45,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:14:45,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:45,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:14:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:14:45,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:14:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:14:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-12 16:14:45,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:14:45,703 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:14:45,703 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-11-12 16:14:45,703 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:14:45,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:14:45,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:14:45,814 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:14:46,285 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:14:46,285 INFO L272 AbstractInterpreter]: Visited 135 different actions 531 times. Merged at 7 different actions 24 times. Never widened. Performed 7580 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7580 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 16:14:46,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:14:46,293 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:14:47,676 INFO L227 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 73.55% of their original sizes. [2018-11-12 16:14:47,677 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:14:48,117 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-11-12 16:14:48,117 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:14:48,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:14:48,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-12 16:14:48,118 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:14:48,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:14:48,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:14:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:14:48,120 INFO L87 Difference]: Start difference. First operand 6429 states and 8091 transitions. Second operand 21 states. [2018-11-12 16:15:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:15:40,138 INFO L93 Difference]: Finished difference Result 13269 states and 17971 transitions. [2018-11-12 16:15:40,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:15:40,138 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 238 [2018-11-12 16:15:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:15:40,167 INFO L225 Difference]: With dead ends: 13269 [2018-11-12 16:15:40,167 INFO L226 Difference]: Without dead ends: 9537 [2018-11-12 16:15:40,186 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 257 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2018-11-12 16:15:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9537 states. [2018-11-12 16:15:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 9188. [2018-11-12 16:15:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9188 states. [2018-11-12 16:15:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9188 states to 9188 states and 11413 transitions. [2018-11-12 16:15:40,359 INFO L78 Accepts]: Start accepts. Automaton has 9188 states and 11413 transitions. Word has length 238 [2018-11-12 16:15:40,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:15:40,359 INFO L480 AbstractCegarLoop]: Abstraction has 9188 states and 11413 transitions. [2018-11-12 16:15:40,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:15:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 9188 states and 11413 transitions. [2018-11-12 16:15:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-12 16:15:40,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:40,365 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:40,365 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:40,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1774807248, now seen corresponding path program 1 times [2018-11-12 16:15:40,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:40,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:40,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:40,367 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-12 16:15:40,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:15:40,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:15:40,565 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:15:40,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:15:40,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:15:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:40,566 INFO L87 Difference]: Start difference. First operand 9188 states and 11413 transitions. Second operand 3 states. [2018-11-12 16:15:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:15:42,365 INFO L93 Difference]: Finished difference Result 14555 states and 19050 transitions. [2018-11-12 16:15:42,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:15:42,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-11-12 16:15:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:15:42,396 INFO L225 Difference]: With dead ends: 14555 [2018-11-12 16:15:42,397 INFO L226 Difference]: Without dead ends: 10437 [2018-11-12 16:15:42,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10437 states. [2018-11-12 16:15:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10437 to 10415. [2018-11-12 16:15:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10415 states. [2018-11-12 16:15:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10415 states to 10415 states and 13022 transitions. [2018-11-12 16:15:42,596 INFO L78 Accepts]: Start accepts. Automaton has 10415 states and 13022 transitions. Word has length 244 [2018-11-12 16:15:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:15:42,597 INFO L480 AbstractCegarLoop]: Abstraction has 10415 states and 13022 transitions. [2018-11-12 16:15:42,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:15:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 10415 states and 13022 transitions. [2018-11-12 16:15:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-12 16:15:42,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:42,607 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:15:42,608 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:42,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash -994946159, now seen corresponding path program 1 times [2018-11-12 16:15:42,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:42,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:42,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:42,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:42,609 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-12 16:15:42,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:15:42,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:15:42,823 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:15:42,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:15:42,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:15:42,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:42,824 INFO L87 Difference]: Start difference. First operand 10415 states and 13022 transitions. Second operand 3 states. [2018-11-12 16:15:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:15:45,730 INFO L93 Difference]: Finished difference Result 17479 states and 23107 transitions. [2018-11-12 16:15:45,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:15:45,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-11-12 16:15:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:15:45,787 INFO L225 Difference]: With dead ends: 17479 [2018-11-12 16:15:45,788 INFO L226 Difference]: Without dead ends: 12515 [2018-11-12 16:15:45,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12515 states. [2018-11-12 16:15:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12515 to 12514. [2018-11-12 16:15:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12514 states. [2018-11-12 16:15:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12514 states to 12514 states and 15812 transitions. [2018-11-12 16:15:46,022 INFO L78 Accepts]: Start accepts. Automaton has 12514 states and 15812 transitions. Word has length 286 [2018-11-12 16:15:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:15:46,022 INFO L480 AbstractCegarLoop]: Abstraction has 12514 states and 15812 transitions. [2018-11-12 16:15:46,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:15:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 12514 states and 15812 transitions. [2018-11-12 16:15:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-12 16:15:46,034 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:46,035 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:15:46,035 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:46,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:46,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1845217006, now seen corresponding path program 1 times [2018-11-12 16:15:46,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:46,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:46,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:46,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:46,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 37 proven. 219 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-12 16:15:46,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:15:46,552 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:15:46,552 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 304 with the following transitions: [2018-11-12 16:15:46,553 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:15:46,555 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:15:46,555 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:15:46,702 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:15:47,504 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:15:47,504 INFO L272 AbstractInterpreter]: Visited 137 different actions 672 times. Merged at 8 different actions 34 times. Never widened. Performed 12078 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12078 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 16:15:47,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:47,511 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:15:47,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:15:47,511 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 16:15:47,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:47,520 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:15:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:47,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:15:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:15:48,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:15:48,510 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 16:15:49,374 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-12 16:15:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:15:49,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:15:49,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2018-11-12 16:15:49,744 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:15:49,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:15:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:15:49,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:15:49,746 INFO L87 Difference]: Start difference. First operand 12514 states and 15812 transitions. Second operand 16 states. [2018-11-12 16:15:57,092 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-11-12 16:16:03,445 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2018-11-12 16:16:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:10,367 INFO L93 Difference]: Finished difference Result 31625 states and 47359 transitions. [2018-11-12 16:16:10,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-11-12 16:16:10,367 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2018-11-12 16:16:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:10,456 INFO L225 Difference]: With dead ends: 31625 [2018-11-12 16:16:10,456 INFO L226 Difference]: Without dead ends: 24561 [2018-11-12 16:16:10,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 682 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3755 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1760, Invalid=8542, Unknown=0, NotChecked=0, Total=10302 [2018-11-12 16:16:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24561 states. [2018-11-12 16:16:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24561 to 22886. [2018-11-12 16:16:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states. [2018-11-12 16:16:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22886 states to 22886 states and 31382 transitions. [2018-11-12 16:16:11,050 INFO L78 Accepts]: Start accepts. Automaton has 22886 states and 31382 transitions. Word has length 303 [2018-11-12 16:16:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:11,050 INFO L480 AbstractCegarLoop]: Abstraction has 22886 states and 31382 transitions. [2018-11-12 16:16:11,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:16:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 22886 states and 31382 transitions. [2018-11-12 16:16:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-11-12 16:16:11,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:11,071 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:16:11,071 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:11,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1756744655, now seen corresponding path program 1 times [2018-11-12 16:16:11,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:11,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:11,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:11,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:11,073 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-11-12 16:16:11,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:16:11,424 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:16:11,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-11-12 16:16:11,425 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [850], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:16:11,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:16:11,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:16:11,514 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:16:12,293 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:16:12,293 INFO L272 AbstractInterpreter]: Visited 157 different actions 769 times. Merged at 7 different actions 30 times. Never widened. Performed 12867 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12867 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 16:16:12,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:12,301 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:16:12,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:16:12,301 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 16:16:12,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:12,310 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:16:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:12,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:16:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-11-12 16:16:12,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:16:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-11-12 16:16:13,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:16:13,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-12 16:16:13,133 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:13,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:16:13,135 INFO L87 Difference]: Start difference. First operand 22886 states and 31382 transitions. Second operand 6 states. [2018-11-12 16:16:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:16,293 INFO L93 Difference]: Finished difference Result 53140 states and 79687 transitions. [2018-11-12 16:16:16,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:16:16,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 308 [2018-11-12 16:16:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:16,435 INFO L225 Difference]: With dead ends: 53140 [2018-11-12 16:16:16,435 INFO L226 Difference]: Without dead ends: 35560 [2018-11-12 16:16:16,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:16:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35560 states. [2018-11-12 16:16:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35560 to 32483. [2018-11-12 16:16:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32483 states. [2018-11-12 16:16:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32483 states to 32483 states and 45857 transitions. [2018-11-12 16:16:17,210 INFO L78 Accepts]: Start accepts. Automaton has 32483 states and 45857 transitions. Word has length 308 [2018-11-12 16:16:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:17,211 INFO L480 AbstractCegarLoop]: Abstraction has 32483 states and 45857 transitions. [2018-11-12 16:16:17,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 32483 states and 45857 transitions. [2018-11-12 16:16:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-12 16:16:17,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:17,228 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:16:17,228 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:17,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1775995713, now seen corresponding path program 1 times [2018-11-12 16:16:17,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:17,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:17,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:17,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:17,230 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 197 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:17,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:16:17,640 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:16:17,640 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 313 with the following transitions: [2018-11-12 16:16:17,641 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 16:16:17,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:16:17,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:16:17,817 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:16:18,487 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:16:18,488 INFO L272 AbstractInterpreter]: Visited 137 different actions 675 times. Merged at 8 different actions 37 times. Widened at 1 different actions 1 times. Performed 11245 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11245 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 16:16:18,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:18,494 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:16:18,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:16:18,494 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 16:16:18,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:18,503 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:16:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:18,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:16:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 171 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:16:18,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:16:19,544 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2018-11-12 16:16:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 26 proven. 149 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:16:20,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:16:20,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2018-11-12 16:16:20,411 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:16:20,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:16:20,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:16:20,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:16:20,413 INFO L87 Difference]: Start difference. First operand 32483 states and 45857 transitions. Second operand 16 states. Received shutdown request... [2018-11-12 16:16:25,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-12 16:16:25,804 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:16:25,810 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:16:25,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:16:25 BoogieIcfgContainer [2018-11-12 16:16:25,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:16:25,812 INFO L168 Benchmark]: Toolchain (without parser) took 217076.06 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -5.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:16:25,813 INFO L168 Benchmark]: CDTParser took 0.22 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 16:16:25,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 923.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:16:25,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -855.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:16:25,815 INFO L168 Benchmark]: Boogie Preprocessor took 114.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:16:25,815 INFO L168 Benchmark]: RCFGBuilder took 4639.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.4 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:16:25,816 INFO L168 Benchmark]: TraceAbstraction took 211207.82 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 612.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:16:25,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 923.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -855.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4639.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.4 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211207.82 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 612.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (32483states) and FLOYD_HOARE automaton (currently 39 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (6551 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 15 OverallIterations, 4 TraceHistogramMax, 183.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4137 SDtfs, 24646 SDslu, 4965 SDs, 0 SdLazy, 39656 SolverSat, 6678 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 3409 GetRequests, 3075 SyntacticMatches, 8 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5555 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32483occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.2s AbstIntTime, 9 AbstIntIterations, 6 AbstIntStrong, 0.9971912393162399 AbsIntWeakeningRatio, 0.13583333333333333 AbsIntAvgWeakeningVarsNumRemoved, 20.581666666666667 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 5740 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 4125 NumberOfCodeBlocks, 4125 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5027 ConstructedInterpolants, 0 QuantifiedInterpolants, 7762407 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1620 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 2270/3022 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown