java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:09:43,849 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:09:43,851 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:09:43,863 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:09:43,864 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:09:43,865 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:09:43,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:09:43,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:09:43,873 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:09:43,874 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:09:43,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:09:43,875 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:09:43,876 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:09:43,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:09:43,879 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:09:43,880 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:09:43,880 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:09:43,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:09:43,894 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:09:43,896 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:09:43,897 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:09:43,898 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:09:43,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:09:43,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:09:43,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:09:43,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:09:43,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:09:43,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:09:43,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:09:43,906 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:09:43,906 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:09:43,907 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:09:43,907 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:09:43,907 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:09:43,909 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:09:43,909 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:09:43,910 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:09:43,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:09:43,937 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:09:43,938 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:09:43,938 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:09:43,939 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:09:43,939 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:09:43,940 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:09:43,940 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:09:43,940 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:09:43,940 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:09:43,940 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:09:43,941 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:09:43,941 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:09:43,941 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:09:43,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:09:43,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:09:43,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:09:43,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:09:43,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:09:43,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:09:43,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:09:43,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:09:43,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:09:43,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:09:43,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:09:43,946 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:09:43,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:09:43,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:09:43,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:09:43,947 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:09:43,947 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:09:43,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:09:43,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:09:43,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:09:43,948 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:09:43,948 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:09:44,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:09:44,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:09:44,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:09:44,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:09:44,037 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:09:44,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-11-07 09:09:44,104 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffd86bad/5ec8268381b54d96b47fb0969a820368/FLAG22fb7740d [2018-11-07 09:09:44,858 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:09:44,859 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-11-07 09:09:44,877 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffd86bad/5ec8268381b54d96b47fb0969a820368/FLAG22fb7740d [2018-11-07 09:09:44,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffd86bad/5ec8268381b54d96b47fb0969a820368 [2018-11-07 09:09:44,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:09:44,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:09:44,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:09:44,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:09:44,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:09:44,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:09:44" (1/1) ... [2018-11-07 09:09:44,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1135f6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:44, skipping insertion in model container [2018-11-07 09:09:44,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:09:44" (1/1) ... [2018-11-07 09:09:44,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:09:45,036 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:09:45,880 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:09:45,885 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:09:46,196 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:09:46,219 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:09:46,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46 WrapperNode [2018-11-07 09:09:46,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:09:46,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:09:46,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:09:46,222 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:09:46,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:09:46,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:09:46,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:09:46,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:09:46,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... [2018-11-07 09:09:46,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:09:46,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:09:46,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:09:46,612 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:09:46,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:09:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:09:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:09:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:09:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:09:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:09:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:09:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:09:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:09:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:09:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:09:46,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:09:54,052 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:09:54,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:54 BoogieIcfgContainer [2018-11-07 09:09:54,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:09:54,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:09:54,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:09:54,058 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:09:54,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:09:44" (1/3) ... [2018-11-07 09:09:54,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d9c7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:54, skipping insertion in model container [2018-11-07 09:09:54,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:46" (2/3) ... [2018-11-07 09:09:54,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d9c7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:54, skipping insertion in model container [2018-11-07 09:09:54,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:54" (3/3) ... [2018-11-07 09:09:54,065 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label44_true-unreach-call.c [2018-11-07 09:09:54,076 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:09:54,084 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:09:54,100 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:09:54,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:09:54,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:09:54,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:09:54,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:09:54,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:09:54,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:09:54,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:09:54,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:09:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:09:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 09:09:54,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:54,208 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:54,210 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:54,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2074557279, now seen corresponding path program 1 times [2018-11-07 09:09:54,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:54,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:54,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:54,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:09:54,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:09:54,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:54,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:09:54,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:09:54,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:09:54,771 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:10:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:01,540 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-11-07 09:10:01,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:10:01,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-07 09:10:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:01,569 INFO L225 Difference]: With dead ends: 1501 [2018-11-07 09:10:01,569 INFO L226 Difference]: Without dead ends: 1057 [2018-11-07 09:10:01,581 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 [2018-11-07 09:10:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-11-07 09:10:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-11-07 09:10:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:10:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-11-07 09:10:01,690 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 73 [2018-11-07 09:10:01,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:01,690 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-11-07 09:10:01,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:10:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-11-07 09:10:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 09:10:01,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:01,699 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:01,700 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:01,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:01,700 INFO L82 PathProgramCache]: Analyzing trace with hash -512151083, now seen corresponding path program 1 times [2018-11-07 09:10:01,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:01,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:01,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:01,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:01,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:02,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:10:02,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:10:02,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:02,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:10:02,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:10:02,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:10:02,004 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-11-07 09:10:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:07,089 INFO L93 Difference]: Finished difference Result 2732 states and 4244 transitions. [2018-11-07 09:10:07,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:10:07,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-11-07 09:10:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:07,109 INFO L225 Difference]: With dead ends: 2732 [2018-11-07 09:10:07,109 INFO L226 Difference]: Without dead ends: 1994 [2018-11-07 09:10:07,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:10:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2018-11-07 09:10:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1682. [2018-11-07 09:10:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-11-07 09:10:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2410 transitions. [2018-11-07 09:10:07,217 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2410 transitions. Word has length 143 [2018-11-07 09:10:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:07,218 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 2410 transitions. [2018-11-07 09:10:07,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:10:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2410 transitions. [2018-11-07 09:10:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 09:10:07,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:07,241 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:07,242 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:07,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1056955347, now seen corresponding path program 1 times [2018-11-07 09:10:07,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:07,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:07,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:07,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:07,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 135 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 09:10:08,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:08,294 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:08,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-07 09:10:08,297 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [819], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:08,357 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:08,357 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:10:09,494 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:10:09,496 INFO L272 AbstractInterpreter]: Visited 130 different actions 377 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:10:09,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:09,540 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:10:10,164 INFO L227 lantSequenceWeakener]: Weakened 288 states. On average, predicates are now at 84.32% of their original sizes. [2018-11-07 09:10:10,165 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:10:10,753 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-11-07 09:10:10,754 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:10:10,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:10:10,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 09:10:10,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:10,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:10:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:10:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:10:10,760 INFO L87 Difference]: Start difference. First operand 1682 states and 2410 transitions. Second operand 9 states. [2018-11-07 09:10:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:56,912 INFO L93 Difference]: Finished difference Result 4300 states and 5862 transitions. [2018-11-07 09:10:56,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:10:56,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 293 [2018-11-07 09:10:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:56,927 INFO L225 Difference]: With dead ends: 4300 [2018-11-07 09:10:56,927 INFO L226 Difference]: Without dead ends: 2624 [2018-11-07 09:10:56,934 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 298 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:10:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-11-07 09:10:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2621. [2018-11-07 09:10:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2018-11-07 09:10:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3399 transitions. [2018-11-07 09:10:57,003 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3399 transitions. Word has length 293 [2018-11-07 09:10:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:57,005 INFO L480 AbstractCegarLoop]: Abstraction has 2621 states and 3399 transitions. [2018-11-07 09:10:57,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:10:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3399 transitions. [2018-11-07 09:10:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-07 09:10:57,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:57,017 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:57,019 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:57,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash 661351119, now seen corresponding path program 1 times [2018-11-07 09:10:57,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:57,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:57,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:57,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:57,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:57,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:57,798 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:57,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-07 09:10:57,805 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:57,831 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:57,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:10:58,692 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:10:58,692 INFO L272 AbstractInterpreter]: Visited 284 different actions 1126 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:10:58,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:58,732 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:10:58,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:58,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:10:58,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:58,749 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:10:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:58,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:10:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:59,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:10:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:59,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:10:59,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:10:59,774 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:10:59,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:10:59,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:10:59,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:10:59,777 INFO L87 Difference]: Start difference. First operand 2621 states and 3399 transitions. Second operand 9 states. [2018-11-07 09:11:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:09,615 INFO L93 Difference]: Finished difference Result 5345 states and 7463 transitions. [2018-11-07 09:11:09,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:11:09,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 434 [2018-11-07 09:11:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:09,642 INFO L225 Difference]: With dead ends: 5345 [2018-11-07 09:11:09,642 INFO L226 Difference]: Without dead ends: 3669 [2018-11-07 09:11:09,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 870 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:11:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2018-11-07 09:11:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3649. [2018-11-07 09:11:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2018-11-07 09:11:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 4448 transitions. [2018-11-07 09:11:09,782 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 4448 transitions. Word has length 434 [2018-11-07 09:11:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:09,783 INFO L480 AbstractCegarLoop]: Abstraction has 3649 states and 4448 transitions. [2018-11-07 09:11:09,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:11:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 4448 transitions. [2018-11-07 09:11:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-11-07 09:11:09,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:09,796 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:11:09,796 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:09,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2077599472, now seen corresponding path program 1 times [2018-11-07 09:11:09,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:09,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:09,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:09,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:09,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:11:10,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:10,606 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:10,606 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 457 with the following transitions: [2018-11-07 09:11:10,607 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:10,616 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:10,616 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:12,795 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:12,795 INFO L272 AbstractInterpreter]: Visited 211 different actions 1040 times. Merged at 8 different actions 32 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:11:12,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:12,839 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:12,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:12,840 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:11:12,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:12,858 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:12,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:11:13,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:11:13,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:11:13,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:11:13,982 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:11:13,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:11:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:11:13,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:11:13,985 INFO L87 Difference]: Start difference. First operand 3649 states and 4448 transitions. Second operand 9 states. [2018-11-07 09:11:15,418 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-07 09:11:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:21,325 INFO L93 Difference]: Finished difference Result 7737 states and 10740 transitions. [2018-11-07 09:11:21,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:11:21,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 456 [2018-11-07 09:11:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:21,365 INFO L225 Difference]: With dead ends: 7737 [2018-11-07 09:11:21,365 INFO L226 Difference]: Without dead ends: 5035 [2018-11-07 09:11:21,404 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 916 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:11:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2018-11-07 09:11:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 5000. [2018-11-07 09:11:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5000 states. [2018-11-07 09:11:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 6295 transitions. [2018-11-07 09:11:21,607 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 6295 transitions. Word has length 456 [2018-11-07 09:11:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:21,608 INFO L480 AbstractCegarLoop]: Abstraction has 5000 states and 6295 transitions. [2018-11-07 09:11:21,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:11:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 6295 transitions. [2018-11-07 09:11:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-11-07 09:11:21,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:21,629 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:11:21,630 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:21,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1311608036, now seen corresponding path program 1 times [2018-11-07 09:11:21,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:21,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:21,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:21,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:21,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 09:11:22,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:11:22,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:11:22,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:11:22,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:11:22,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:11:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:11:22,534 INFO L87 Difference]: Start difference. First operand 5000 states and 6295 transitions. Second operand 5 states. [2018-11-07 09:11:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:25,917 INFO L93 Difference]: Finished difference Result 13212 states and 17966 transitions. [2018-11-07 09:11:25,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:11:25,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 542 [2018-11-07 09:11:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:25,986 INFO L225 Difference]: With dead ends: 13212 [2018-11-07 09:11:25,987 INFO L226 Difference]: Without dead ends: 9159 [2018-11-07 09:11:26,021 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:11:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9159 states. [2018-11-07 09:11:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9159 to 9001. [2018-11-07 09:11:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2018-11-07 09:11:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 11469 transitions. [2018-11-07 09:11:26,337 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 11469 transitions. Word has length 542 [2018-11-07 09:11:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:26,338 INFO L480 AbstractCegarLoop]: Abstraction has 9001 states and 11469 transitions. [2018-11-07 09:11:26,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:11:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 11469 transitions. [2018-11-07 09:11:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-11-07 09:11:26,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:26,360 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:11:26,360 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:26,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1436575480, now seen corresponding path program 1 times [2018-11-07 09:11:26,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:26,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:26,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:26,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:26,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-07 09:11:26,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:11:26,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:11:26,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:11:26,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:11:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:11:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:11:26,900 INFO L87 Difference]: Start difference. First operand 9001 states and 11469 transitions. Second operand 3 states. [2018-11-07 09:11:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:29,552 INFO L93 Difference]: Finished difference Result 18998 states and 25830 transitions. [2018-11-07 09:11:29,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:11:29,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 552 [2018-11-07 09:11:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:29,859 INFO L225 Difference]: With dead ends: 18998 [2018-11-07 09:11:29,859 INFO L226 Difference]: Without dead ends: 10944 [2018-11-07 09:11:29,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:11:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2018-11-07 09:11:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 10936. [2018-11-07 09:11:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10936 states. [2018-11-07 09:11:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 14357 transitions. [2018-11-07 09:11:30,192 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 14357 transitions. Word has length 552 [2018-11-07 09:11:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:30,194 INFO L480 AbstractCegarLoop]: Abstraction has 10936 states and 14357 transitions. [2018-11-07 09:11:30,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:11:30,194 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 14357 transitions. [2018-11-07 09:11:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-11-07 09:11:30,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:30,221 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:11:30,221 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:30,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash -60931133, now seen corresponding path program 1 times [2018-11-07 09:11:30,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:30,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:30,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:30,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:30,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 151 proven. 679 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 09:11:32,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:32,606 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:32,607 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 649 with the following transitions: [2018-11-07 09:11:32,607 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [974], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:32,612 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:32,612 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:33,510 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:33,510 INFO L272 AbstractInterpreter]: Visited 214 different actions 1268 times. Merged at 9 different actions 48 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:11:33,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:33,519 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:33,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:33,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 09:11:33,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:33,740 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:33,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 653 proven. 41 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2018-11-07 09:11:34,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 279 proven. 539 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-11-07 09:11:35,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:11:35,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2018-11-07 09:11:35,795 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:11:35,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 09:11:35,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 09:11:35,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2018-11-07 09:11:35,798 INFO L87 Difference]: Start difference. First operand 10936 states and 14357 transitions. Second operand 20 states. [2018-11-07 09:11:37,429 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2018-11-07 09:11:58,072 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-07 09:12:00,587 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-11-07 09:12:06,458 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-11-07 09:12:08,478 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-11-07 09:12:15,772 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2018-11-07 09:12:19,914 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-11-07 09:12:27,823 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2018-11-07 09:12:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:12:57,088 INFO L93 Difference]: Finished difference Result 54457 states and 161495 transitions. [2018-11-07 09:12:57,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-11-07 09:12:57,088 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 648 [2018-11-07 09:12:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:12:57,931 INFO L225 Difference]: With dead ends: 54457 [2018-11-07 09:12:57,931 INFO L226 Difference]: Without dead ends: 41648 [2018-11-07 09:12:58,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1591 GetRequests, 1400 SyntacticMatches, 5 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14612 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=4868, Invalid=30288, Unknown=0, NotChecked=0, Total=35156 [2018-11-07 09:12:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41648 states. [2018-11-07 09:13:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41648 to 35625. [2018-11-07 09:13:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35625 states. [2018-11-07 09:13:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35625 states to 35625 states and 70056 transitions. [2018-11-07 09:13:03,450 INFO L78 Accepts]: Start accepts. Automaton has 35625 states and 70056 transitions. Word has length 648 [2018-11-07 09:13:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:13:03,450 INFO L480 AbstractCegarLoop]: Abstraction has 35625 states and 70056 transitions. [2018-11-07 09:13:03,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 09:13:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 35625 states and 70056 transitions. [2018-11-07 09:13:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2018-11-07 09:13:03,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:13:03,716 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:13:03,716 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:13:03,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1470850633, now seen corresponding path program 1 times [2018-11-07 09:13:03,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:13:03,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:03,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:03,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:03,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:13:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-11-07 09:13:04,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:04,579 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:13:04,579 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 863 with the following transitions: [2018-11-07 09:13:04,580 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1553], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:13:04,585 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:13:04,585 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:13:09,401 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:13:09,401 INFO L272 AbstractInterpreter]: Visited 288 different actions 855 times. Merged at 9 different actions 19 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:13:09,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:09,408 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:13:09,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:09,408 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:13:09,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:09,419 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:13:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:09,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:13:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-11-07 09:13:10,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:13:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-11-07 09:13:11,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:13:11,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-11-07 09:13:11,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:13:11,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:13:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:13:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:13:11,042 INFO L87 Difference]: Start difference. First operand 35625 states and 70056 transitions. Second operand 3 states. [2018-11-07 09:13:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:13:15,192 INFO L93 Difference]: Finished difference Result 70223 states and 139579 transitions. [2018-11-07 09:13:15,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:13:15,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 862 [2018-11-07 09:13:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:13:15,637 INFO L225 Difference]: With dead ends: 70223 [2018-11-07 09:13:15,637 INFO L226 Difference]: Without dead ends: 35940 [2018-11-07 09:13:16,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1726 GetRequests, 1724 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:13:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35940 states. [2018-11-07 09:13:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35940 to 35620. [2018-11-07 09:13:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35620 states. [2018-11-07 09:13:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35620 states to 35620 states and 69847 transitions. [2018-11-07 09:13:18,443 INFO L78 Accepts]: Start accepts. Automaton has 35620 states and 69847 transitions. Word has length 862 [2018-11-07 09:13:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:13:18,444 INFO L480 AbstractCegarLoop]: Abstraction has 35620 states and 69847 transitions. [2018-11-07 09:13:18,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:13:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 35620 states and 69847 transitions. [2018-11-07 09:13:18,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-11-07 09:13:18,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:13:18,639 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:13:18,639 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:13:18,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash -241169351, now seen corresponding path program 1 times [2018-11-07 09:13:18,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:13:18,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:18,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:18,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:18,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:13:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2018-11-07 09:13:20,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:20,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:13:20,586 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 881 with the following transitions: [2018-11-07 09:13:20,587 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [566], [567], [571], [582], [586], [590], [594], [598], [601], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1553], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:13:20,592 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:13:20,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:13:23,922 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:13:23,922 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:13:23,923 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:13:23,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:23,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:13:23,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:23,931 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:13:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:24,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:13:24,179 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:13:24,381 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:13:24,381 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:13:24,389 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:13:24,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:13:24 BoogieIcfgContainer [2018-11-07 09:13:24,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:13:24,390 INFO L168 Benchmark]: Toolchain (without parser) took 219482.89 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -418.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,393 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:13:24,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1310.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,395 INFO L168 Benchmark]: Boogie Preprocessor took 173.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,400 INFO L168 Benchmark]: RCFGBuilder took 7441.50 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.8 MB). Peak memory consumption was 288.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,400 INFO L168 Benchmark]: TraceAbstraction took 210335.03 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 50.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:13:24,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1310.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 173.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7441.50 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.8 MB). Peak memory consumption was 288.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210335.03 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 50.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 205). Cancelled while BasicCegarLoop was analyzing trace of length 881 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2809 SDtfs, 27742 SDslu, 4208 SDs, 0 SdLazy, 54656 SolverSat, 13539 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5466 GetRequests, 5211 SyntacticMatches, 9 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14741 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35625occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.4s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9973668115298379 AbsIntWeakeningRatio, 0.09246575342465753 AbsIntAvgWeakeningVarsNumRemoved, 14.67123287671233 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 7192 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 6403 NumberOfCodeBlocks, 6403 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 8786 ConstructedInterpolants, 0 QuantifiedInterpolants, 19248238 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3325 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 8174/9536 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown