java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:16:44,768 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:16:44,770 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:16:44,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:16:44,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:16:44,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:16:44,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:16:44,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:16:44,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:16:44,793 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:16:44,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:16:44,800 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:16:44,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:16:44,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:16:44,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:16:44,811 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:16:44,812 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:16:44,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:16:44,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:16:44,817 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:16:44,818 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:16:44,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:16:44,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:16:44,825 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:16:44,825 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:16:44,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:16:44,830 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:16:44,831 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:16:44,832 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:16:44,833 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:16:44,833 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:16:44,836 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:16:44,837 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:16:44,837 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:16:44,839 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:16:44,839 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:16:44,840 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:16:44,871 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:16:44,871 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:16:44,872 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:16:44,872 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:16:44,873 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:16:44,873 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:16:44,873 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:16:44,873 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:16:44,874 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:16:44,874 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:16:44,874 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:16:44,874 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:16:44,874 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:16:44,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:16:44,875 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:16:44,875 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:16:44,876 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:16:44,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:16:44,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:16:44,876 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:16:44,876 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:16:44,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:16:44,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:16:44,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:16:44,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:16:44,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:16:44,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:16:44,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:16:44,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:16:44,878 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:16:44,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:16:44,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:16:44,879 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:16:44,879 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:16:44,879 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:16:44,944 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:16:44,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:16:44,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:16:44,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:16:44,965 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:16:44,967 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-12 17:16:45,036 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a798469/e2f80e75a399472e93986d689ffd8b67/FLAG1a545fb2b [2018-11-12 17:16:45,773 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:16:45,773 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-12 17:16:45,807 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a798469/e2f80e75a399472e93986d689ffd8b67/FLAG1a545fb2b [2018-11-12 17:16:45,830 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a798469/e2f80e75a399472e93986d689ffd8b67 [2018-11-12 17:16:45,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:16:45,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:16:45,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:16:45,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:16:45,851 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:16:45,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:16:45" (1/1) ... [2018-11-12 17:16:45,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f589739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:45, skipping insertion in model container [2018-11-12 17:16:45,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:16:45" (1/1) ... [2018-11-12 17:16:45,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:16:45,986 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:16:46,678 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:16:46,684 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:16:46,943 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:16:46,971 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:16:46,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46 WrapperNode [2018-11-12 17:16:46,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:16:46,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:16:46,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:16:46,974 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:16:46,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:16:47,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:16:47,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:16:47,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:16:47,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (1/1) ... [2018-11-12 17:16:47,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:16:47,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:16:47,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:16:47,309 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:16:47,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (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 [2018-11-12 17:16:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:16:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:16:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:16:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:16:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:16:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:16:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:16:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:16:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:16:52,653 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:16:52,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:16:52 BoogieIcfgContainer [2018-11-12 17:16:52,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:16:52,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:16:52,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:16:52,659 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:16:52,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:16:45" (1/3) ... [2018-11-12 17:16:52,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186ba43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:16:52, skipping insertion in model container [2018-11-12 17:16:52,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:46" (2/3) ... [2018-11-12 17:16:52,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186ba43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:16:52, skipping insertion in model container [2018-11-12 17:16:52,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:16:52" (3/3) ... [2018-11-12 17:16:52,664 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01_true-unreach-call.c [2018-11-12 17:16:52,675 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:16:52,684 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:16:52,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:16:52,745 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:16:52,745 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:16:52,745 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:16:52,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:16:52,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:16:52,746 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:16:52,746 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:16:52,746 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:16:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:16:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-11-12 17:16:52,799 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:16:52,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:16:52,803 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:16:52,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:16:52,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1178454204, now seen corresponding path program 1 times [2018-11-12 17:16:52,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:16:52,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:52,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:16:52,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:52,875 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:16:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:16:53,790 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:16:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:16:54,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:16:54,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:16:54,106 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:16:54,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:16:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:16:54,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:16:54,132 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:16:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:16:56,061 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-11-12 17:16:56,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:16:56,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-11-12 17:16:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:16:56,087 INFO L225 Difference]: With dead ends: 844 [2018-11-12 17:16:56,087 INFO L226 Difference]: Without dead ends: 530 [2018-11-12 17:16:56,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:16:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-12 17:16:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-11-12 17:16:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-12 17:16:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-11-12 17:16:56,207 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 193 [2018-11-12 17:16:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:16:56,209 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-11-12 17:16:56,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:16:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-11-12 17:16:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-12 17:16:56,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:16:56,224 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:16:56,228 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:16:56,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:16:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash 851918400, now seen corresponding path program 1 times [2018-11-12 17:16:56,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:16:56,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:56,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:16:56,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:56,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:16:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:16:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:16:56,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:16:56,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:16:56,798 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:16:56,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:16:56,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:16:56,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:16:56,801 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-11-12 17:16:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:16:58,964 INFO L93 Difference]: Finished difference Result 1477 states and 2511 transitions. [2018-11-12 17:16:58,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:16:58,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2018-11-12 17:16:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:16:58,977 INFO L225 Difference]: With dead ends: 1477 [2018-11-12 17:16:58,977 INFO L226 Difference]: Without dead ends: 958 [2018-11-12 17:16:58,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:16:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-11-12 17:16:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 943. [2018-11-12 17:16:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-11-12 17:16:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1546 transitions. [2018-11-12 17:16:59,036 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1546 transitions. Word has length 206 [2018-11-12 17:16:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:16:59,036 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1546 transitions. [2018-11-12 17:16:59,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:16:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1546 transitions. [2018-11-12 17:16:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-12 17:16:59,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:16:59,044 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:16:59,044 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:16:59,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:16:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash 584750157, now seen corresponding path program 1 times [2018-11-12 17:16:59,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:16:59,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:59,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:16:59,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:16:59,046 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:16:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:16:59,265 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:16:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:16:59,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:16:59,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:16:59,612 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:16:59,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:16:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:16:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:16:59,614 INFO L87 Difference]: Start difference. First operand 943 states and 1546 transitions. Second operand 6 states. [2018-11-12 17:17:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:04,689 INFO L93 Difference]: Finished difference Result 2885 states and 4975 transitions. [2018-11-12 17:17:04,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:17:04,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-12 17:17:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:04,714 INFO L225 Difference]: With dead ends: 2885 [2018-11-12 17:17:04,715 INFO L226 Difference]: Without dead ends: 1948 [2018-11-12 17:17:04,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:17:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2018-11-12 17:17:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1883. [2018-11-12 17:17:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2018-11-12 17:17:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3103 transitions. [2018-11-12 17:17:04,809 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3103 transitions. Word has length 211 [2018-11-12 17:17:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:04,810 INFO L480 AbstractCegarLoop]: Abstraction has 1883 states and 3103 transitions. [2018-11-12 17:17:04,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:17:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3103 transitions. [2018-11-12 17:17:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-12 17:17:04,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:04,819 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:17:04,819 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:04,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:04,820 INFO L82 PathProgramCache]: Analyzing trace with hash -223286947, now seen corresponding path program 1 times [2018-11-12 17:17:04,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:04,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:04,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:04,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:04,822 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:05,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:05,160 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:05,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-12 17:17:05,164 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:05,231 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:05,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:08,838 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:08,840 INFO L272 AbstractInterpreter]: Visited 197 different actions 388 times. Merged at 5 different actions 5 times. Never widened. Performed 7177 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7177 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:08,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:08,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:10,745 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.79% of their original sizes. [2018-11-12 17:17:10,745 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:17:11,785 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-12 17:17:11,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:17:11,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:11,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 17:17:11,787 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:11,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 17:17:11,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 17:17:11,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:17:11,788 INFO L87 Difference]: Start difference. First operand 1883 states and 3103 transitions. Second operand 23 states. [2018-11-12 17:17:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:50,804 INFO L93 Difference]: Finished difference Result 4608 states and 7567 transitions. [2018-11-12 17:17:50,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 17:17:50,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 218 [2018-11-12 17:17:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:50,822 INFO L225 Difference]: With dead ends: 4608 [2018-11-12 17:17:50,822 INFO L226 Difference]: Without dead ends: 2731 [2018-11-12 17:17:50,829 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2018-11-12 17:17:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2018-11-12 17:17:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2729. [2018-11-12 17:17:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2729 states. [2018-11-12 17:17:50,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4048 transitions. [2018-11-12 17:17:50,905 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4048 transitions. Word has length 218 [2018-11-12 17:17:50,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:50,905 INFO L480 AbstractCegarLoop]: Abstraction has 2729 states and 4048 transitions. [2018-11-12 17:17:50,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 17:17:50,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4048 transitions. [2018-11-12 17:17:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-12 17:17:50,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:50,915 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:50,916 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:50,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1470271054, now seen corresponding path program 1 times [2018-11-12 17:17:50,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:50,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:50,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:50,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:50,918 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:51,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:51,390 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:51,391 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-12 17:17:51,391 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:51,401 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:51,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:54,462 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:54,462 INFO L272 AbstractInterpreter]: Visited 197 different actions 390 times. Merged at 5 different actions 7 times. Never widened. Performed 12012 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12012 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:54,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:54,470 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:55,615 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-12 17:17:55,616 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:17:56,228 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-12 17:17:56,228 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:17:56,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:56,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-12 17:17:56,229 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:56,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 17:17:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 17:17:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-11-12 17:17:56,231 INFO L87 Difference]: Start difference. First operand 2729 states and 4048 transitions. Second operand 24 states. [2018-11-12 17:19:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:17,866 INFO L93 Difference]: Finished difference Result 6562 states and 10156 transitions. [2018-11-12 17:19:17,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:19:17,866 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 225 [2018-11-12 17:19:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:17,887 INFO L225 Difference]: With dead ends: 6562 [2018-11-12 17:19:17,887 INFO L226 Difference]: Without dead ends: 4047 [2018-11-12 17:19:17,897 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 17:19:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2018-11-12 17:19:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4042. [2018-11-12 17:19:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4042 states. [2018-11-12 17:19:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5634 transitions. [2018-11-12 17:19:18,004 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5634 transitions. Word has length 225 [2018-11-12 17:19:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:18,004 INFO L480 AbstractCegarLoop]: Abstraction has 4042 states and 5634 transitions. [2018-11-12 17:19:18,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 17:19:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5634 transitions. [2018-11-12 17:19:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-12 17:19:18,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:18,019 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:18,019 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:18,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:18,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1815954702, now seen corresponding path program 1 times [2018-11-12 17:19:18,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:18,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:18,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:18,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:18,021 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:18,286 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:19:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:18,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:18,627 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:18,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-12 17:19:18,628 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:18,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:18,636 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:21,695 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:21,695 INFO L272 AbstractInterpreter]: Visited 198 different actions 591 times. Merged at 7 different actions 21 times. Never widened. Performed 15021 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15021 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:19:21,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:21,704 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:21,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:21,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:19:21,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:21,723 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:21,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:22,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:22,577 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-12 17:19:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:23,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:19:23,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-12 17:19:23,364 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:19:23,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:19:23,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:19:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-12 17:19:23,367 INFO L87 Difference]: Start difference. First operand 4042 states and 5634 transitions. Second operand 12 states. [2018-11-12 17:19:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:30,765 INFO L93 Difference]: Finished difference Result 18455 states and 30466 transitions. [2018-11-12 17:19:30,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 17:19:30,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 227 [2018-11-12 17:19:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:30,856 INFO L225 Difference]: With dead ends: 18455 [2018-11-12 17:19:30,856 INFO L226 Difference]: Without dead ends: 14208 [2018-11-12 17:19:30,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 17:19:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14208 states. [2018-11-12 17:19:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14208 to 14168. [2018-11-12 17:19:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14168 states. [2018-11-12 17:19:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14168 states to 14168 states and 20852 transitions. [2018-11-12 17:19:31,417 INFO L78 Accepts]: Start accepts. Automaton has 14168 states and 20852 transitions. Word has length 227 [2018-11-12 17:19:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:31,418 INFO L480 AbstractCegarLoop]: Abstraction has 14168 states and 20852 transitions. [2018-11-12 17:19:31,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 17:19:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14168 states and 20852 transitions. [2018-11-12 17:19:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-12 17:19:31,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:31,469 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:31,469 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:31,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1873001038, now seen corresponding path program 1 times [2018-11-12 17:19:31,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:31,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:31,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:31,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:31,471 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:31,893 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 6 [2018-11-12 17:19:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 17:19:32,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:32,573 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:32,573 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-12 17:19:32,574 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:32,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:32,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:35,541 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:35,542 INFO L272 AbstractInterpreter]: Visited 198 different actions 587 times. Merged at 7 different actions 17 times. Never widened. Performed 14015 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14015 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-12 17:19:35,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:35,552 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:35,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:35,552 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:19:35,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:35,561 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:35,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:35,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:36,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:19:36,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2018-11-12 17:19:36,227 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:19:36,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:19:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:19:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:19:36,230 INFO L87 Difference]: Start difference. First operand 14168 states and 20852 transitions. Second operand 12 states. [2018-11-12 17:19:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:44,972 INFO L93 Difference]: Finished difference Result 62497 states and 105140 transitions. [2018-11-12 17:19:44,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 17:19:44,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 241 [2018-11-12 17:19:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:45,276 INFO L225 Difference]: With dead ends: 62497 [2018-11-12 17:19:45,276 INFO L226 Difference]: Without dead ends: 48543 [2018-11-12 17:19:45,383 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 17:19:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48543 states. [2018-11-12 17:19:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48543 to 46924. [2018-11-12 17:19:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46924 states. [2018-11-12 17:19:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 69326 transitions. [2018-11-12 17:19:47,260 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 69326 transitions. Word has length 241 [2018-11-12 17:19:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:47,261 INFO L480 AbstractCegarLoop]: Abstraction has 46924 states and 69326 transitions. [2018-11-12 17:19:47,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 17:19:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 69326 transitions. [2018-11-12 17:19:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-12 17:19:47,376 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:47,376 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:47,377 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:47,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 191668955, now seen corresponding path program 1 times [2018-11-12 17:19:47,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:47,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:47,379 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:47,671 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:19:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 56 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 17:19:48,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:48,120 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:48,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-12 17:19:48,120 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:48,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:48,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:49,636 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:19:49,637 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Performed 8422 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8422 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:49,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:49,642 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:19:50,900 INFO L227 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 80.65% of their original sizes. [2018-11-12 17:19:50,900 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:19:55,347 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-12 17:19:55,347 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:19:55,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:19:55,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [10] total 34 [2018-11-12 17:19:55,348 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:19:55,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-12 17:19:55,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-12 17:19:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-11-12 17:19:55,352 INFO L87 Difference]: Start difference. First operand 46924 states and 69326 transitions. Second operand 26 states. Received shutdown request... [2018-11-12 17:20:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 17:20:39,842 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:20:39,848 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:20:39,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:20:39 BoogieIcfgContainer [2018-11-12 17:20:39,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:20:39,849 INFO L168 Benchmark]: Toolchain (without parser) took 234004.93 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -449.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:39,850 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:20:39,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1125.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:39,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:39,852 INFO L168 Benchmark]: Boogie Preprocessor took 137.74 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:20:39,853 INFO L168 Benchmark]: RCFGBuilder took 5345.86 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: 246.5 MB). Peak memory consumption was 246.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:39,853 INFO L168 Benchmark]: TraceAbstraction took 227192.94 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: 80.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:39,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 1125.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.74 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5345.86 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: 246.5 MB). Peak memory consumption was 246.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227192.94 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: 80.4 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: 1593]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1593). Cancelled while BasicCegarLoop was constructing difference of abstraction (46924states) and FLOYD_HOARE automaton (currently 24 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (67361 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 227.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 191.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1900 SDtfs, 20695 SDslu, 3704 SDs, 0 SdLazy, 20330 SolverSat, 6603 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1751 GetRequests, 1538 SyntacticMatches, 42 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46924occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.3s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.998846762962944 AbsIntWeakeningRatio, 0.2801724137931034 AbsIntAvgWeakeningVarsNumRemoved, 57.833333333333336 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 1751 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 2245 NumberOfCodeBlocks, 2245 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2701 ConstructedInterpolants, 0 QuantifiedInterpolants, 1362475 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2097 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 360/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown