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/Problem13_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:26:36,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:26:36,769 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:26:36,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:26:36,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:26:36,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:26:36,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:26:36,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:26:36,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:26:36,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:26:36,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:26:36,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:26:36,791 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:26:36,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:26:36,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:26:36,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:26:36,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:26:36,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:26:36,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:26:36,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:26:36,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:26:36,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:26:36,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:26:36,811 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:26:36,811 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:26:36,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:26:36,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:26:36,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:26:36,820 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:26:36,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:26:36,822 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:26:36,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:26:36,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:26:36,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:26:36,825 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:26:36,827 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:26:36,827 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:26:36,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:26:36,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:26:36,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:26:36,858 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:26:36,858 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:26:36,858 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:26:36,858 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:26:36,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:26:36,859 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:26:36,859 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:26:36,859 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:26:36,860 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:26:36,860 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:26:36,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:26:36,861 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:26:36,861 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:26:36,861 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:26:36,861 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:26:36,861 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:26:36,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:26:36,863 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:26:36,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:26:36,863 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:26:36,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:26:36,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:26:36,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:26:36,864 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:26:36,864 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:26:36,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:26:36,865 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:26:36,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:26:36,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:26:36,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:26:36,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:26:36,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:26:36,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:26:36,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:26:36,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:26:36,955 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:26:36,956 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:26:36,956 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-11-12 16:26:37,009 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb80406f/be48329c5814491585931c5ec145fb39/FLAG6fada2313 [2018-11-12 16:26:37,821 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:26:37,822 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-11-12 16:26:37,873 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb80406f/be48329c5814491585931c5ec145fb39/FLAG6fada2313 [2018-11-12 16:26:37,891 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb80406f/be48329c5814491585931c5ec145fb39 [2018-11-12 16:26:37,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:26:37,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:26:37,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:26:37,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:26:37,913 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:26:37,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:37" (1/1) ... [2018-11-12 16:26:37,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b74e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:37, skipping insertion in model container [2018-11-12 16:26:37,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:37" (1/1) ... [2018-11-12 16:26:37,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:26:38,124 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:26:39,626 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:26:39,631 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:26:40,446 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:26:40,484 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:26:40,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40 WrapperNode [2018-11-12 16:26:40,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:26:40,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:26:40,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:26:40,486 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:26:40,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:40,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:40,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:26:40,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:26:40,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:26:40,871 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:26:40,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:40,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:40,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:40,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:41,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:41,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:41,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... [2018-11-12 16:26:41,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:26:41,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:26:41,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:26:41,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:26:41,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:26:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:26:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:26:41,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:26:41,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:26:41,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:26:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:26:41,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:26:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:26:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:26:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:26:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:26:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:26:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:26:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:26:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:26:51,446 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:26:51,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:51 BoogieIcfgContainer [2018-11-12 16:26:51,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:26:51,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:26:51,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:26:51,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:26:51,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:26:37" (1/3) ... [2018-11-12 16:26:51,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:51, skipping insertion in model container [2018-11-12 16:26:51,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:40" (2/3) ... [2018-11-12 16:26:51,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:51, skipping insertion in model container [2018-11-12 16:26:51,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:51" (3/3) ... [2018-11-12 16:26:51,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label58_false-unreach-call.c [2018-11-12 16:26:51,465 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:26:51,476 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:26:51,493 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:26:51,539 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:26:51,539 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:26:51,540 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:26:51,540 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:26:51,540 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:26:51,540 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:26:51,540 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:26:51,540 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:26:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:26:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-12 16:26:51,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:51,595 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:51,599 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:51,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:51,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1597313123, now seen corresponding path program 1 times [2018-11-12 16:26:51,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:51,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:51,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:51,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:51,664 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:52,050 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:26:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:52,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:52,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:26:52,180 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:52,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:26:52,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:26:52,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:26:52,223 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 16:27:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:00,879 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-12 16:27:00,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:27:00,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-12 16:27:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:00,915 INFO L225 Difference]: With dead ends: 3097 [2018-11-12 16:27:00,915 INFO L226 Difference]: Without dead ends: 1975 [2018-11-12 16:27:00,927 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 16:27:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-12 16:27:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-12 16:27:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-12 16:27:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-12 16:27:01,088 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 19 [2018-11-12 16:27:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:01,088 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-12 16:27:01,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:27:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-12 16:27:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-12 16:27:01,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:01,098 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:27:01,098 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:01,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:01,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1812746414, now seen corresponding path program 1 times [2018-11-12 16:27:01,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:01,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:01,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:01,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:01,103 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:01,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:01,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:27:01,405 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:01,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:27:01,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:27:01,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:27:01,407 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-12 16:27:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:15,113 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-12 16:27:15,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:27:15,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-11-12 16:27:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:15,148 INFO L225 Difference]: With dead ends: 5734 [2018-11-12 16:27:15,148 INFO L226 Difference]: Without dead ends: 3766 [2018-11-12 16:27:15,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:27:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-12 16:27:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-12 16:27:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-12 16:27:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-12 16:27:15,282 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 95 [2018-11-12 16:27:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:15,283 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-12 16:27:15,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:27:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-12 16:27:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-12 16:27:15,288 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:15,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:15,288 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:15,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1681120082, now seen corresponding path program 1 times [2018-11-12 16:27:15,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:15,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:15,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:15,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:15,290 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:15,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:15,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:27:15,678 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:15,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:27:15,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:27:15,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:27:15,680 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-12 16:27:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:33,195 INFO L93 Difference]: Finished difference Result 13640 states and 21720 transitions. [2018-11-12 16:27:33,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:27:33,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-11-12 16:27:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:33,266 INFO L225 Difference]: With dead ends: 13640 [2018-11-12 16:27:33,267 INFO L226 Difference]: Without dead ends: 9965 [2018-11-12 16:27:33,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:27:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2018-11-12 16:27:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 9777. [2018-11-12 16:27:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9777 states. [2018-11-12 16:27:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9777 states to 9777 states and 14474 transitions. [2018-11-12 16:27:33,591 INFO L78 Accepts]: Start accepts. Automaton has 9777 states and 14474 transitions. Word has length 109 [2018-11-12 16:27:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:33,592 INFO L480 AbstractCegarLoop]: Abstraction has 9777 states and 14474 transitions. [2018-11-12 16:27:33,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:27:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 9777 states and 14474 transitions. [2018-11-12 16:27:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-12 16:27:33,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:33,606 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:27:33,606 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:33,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1652720786, now seen corresponding path program 1 times [2018-11-12 16:27:33,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:33,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:33,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:33,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:33,608 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:33,911 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:27:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:34,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:34,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:27:34,233 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:34,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:34,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:34,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:27:34,235 INFO L87 Difference]: Start difference. First operand 9777 states and 14474 transitions. Second operand 6 states. [2018-11-12 16:27:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:46,411 INFO L93 Difference]: Finished difference Result 34060 states and 53524 transitions. [2018-11-12 16:27:46,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:27:46,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-12 16:27:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:46,519 INFO L225 Difference]: With dead ends: 34060 [2018-11-12 16:27:46,520 INFO L226 Difference]: Without dead ends: 24289 [2018-11-12 16:27:46,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:27:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24289 states. [2018-11-12 16:27:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24289 to 24066. [2018-11-12 16:27:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24066 states. [2018-11-12 16:27:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24066 states to 24066 states and 33879 transitions. [2018-11-12 16:27:47,191 INFO L78 Accepts]: Start accepts. Automaton has 24066 states and 33879 transitions. Word has length 127 [2018-11-12 16:27:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:47,191 INFO L480 AbstractCegarLoop]: Abstraction has 24066 states and 33879 transitions. [2018-11-12 16:27:47,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:27:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 24066 states and 33879 transitions. [2018-11-12 16:27:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-12 16:27:47,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:47,203 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:27:47,203 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:47,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1095351321, now seen corresponding path program 1 times [2018-11-12 16:27:47,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:47,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:47,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:47,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:47,206 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:47,527 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:27:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:47,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:47,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:27:47,919 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:47,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:47,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:27:47,921 INFO L87 Difference]: Start difference. First operand 24066 states and 33879 transitions. Second operand 6 states. [2018-11-12 16:27:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:57,068 INFO L93 Difference]: Finished difference Result 61303 states and 95878 transitions. [2018-11-12 16:27:57,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:27:57,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-12 16:27:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:57,248 INFO L225 Difference]: With dead ends: 61303 [2018-11-12 16:27:57,248 INFO L226 Difference]: Without dead ends: 37243 [2018-11-12 16:27:57,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:27:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37243 states. [2018-11-12 16:27:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37243 to 37041. [2018-11-12 16:27:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37041 states. [2018-11-12 16:27:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37041 states to 37041 states and 52767 transitions. [2018-11-12 16:27:58,200 INFO L78 Accepts]: Start accepts. Automaton has 37041 states and 52767 transitions. Word has length 138 [2018-11-12 16:27:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:58,200 INFO L480 AbstractCegarLoop]: Abstraction has 37041 states and 52767 transitions. [2018-11-12 16:27:58,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:27:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 37041 states and 52767 transitions. [2018-11-12 16:27:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-12 16:27:58,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:58,205 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:27:58,205 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:58,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:58,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1731803128, now seen corresponding path program 1 times [2018-11-12 16:27:58,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:58,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:58,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:58,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:58,210 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:58,523 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:27:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:58,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:27:58,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:27:58,911 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:58,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:27:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:27:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:27:58,913 INFO L87 Difference]: Start difference. First operand 37041 states and 52767 transitions. Second operand 6 states. [2018-11-12 16:28:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:06,752 INFO L93 Difference]: Finished difference Result 81265 states and 119269 transitions. [2018-11-12 16:28:06,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:28:06,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-11-12 16:28:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:06,927 INFO L225 Difference]: With dead ends: 81265 [2018-11-12 16:28:06,927 INFO L226 Difference]: Without dead ends: 44230 [2018-11-12 16:28:07,012 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:28:07,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44230 states. [2018-11-12 16:28:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44230 to 44129. [2018-11-12 16:28:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44129 states. [2018-11-12 16:28:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44129 states to 44129 states and 60154 transitions. [2018-11-12 16:28:07,803 INFO L78 Accepts]: Start accepts. Automaton has 44129 states and 60154 transitions. Word has length 166 [2018-11-12 16:28:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:07,803 INFO L480 AbstractCegarLoop]: Abstraction has 44129 states and 60154 transitions. [2018-11-12 16:28:07,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:28:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 44129 states and 60154 transitions. [2018-11-12 16:28:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-12 16:28:07,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:07,811 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:28:07,811 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:07,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 456578613, now seen corresponding path program 1 times [2018-11-12 16:28:07,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:07,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:07,813 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:28:08,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:08,327 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:08,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-12 16:28:08,338 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2679], [2681], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:28:08,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:08,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:09,475 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:28:09,477 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 2836 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2836 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:28:09,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:09,521 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:28:10,511 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 70.97% of their original sizes. [2018-11-12 16:28:10,511 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:28:11,412 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-12 16:28:11,412 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:28:11,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:28:11,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:28:11,414 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:28:11,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:28:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:28:11,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:28:11,415 INFO L87 Difference]: Start difference. First operand 44129 states and 60154 transitions. Second operand 11 states. [2018-11-12 16:28:21,947 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:01,398 INFO L93 Difference]: Finished difference Result 89061 states and 121202 transitions. [2018-11-12 16:29:01,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:29:01,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2018-11-12 16:29:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:01,546 INFO L225 Difference]: With dead ends: 89061 [2018-11-12 16:29:01,546 INFO L226 Difference]: Without dead ends: 44938 [2018-11-12 16:29:01,621 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:29:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44938 states. [2018-11-12 16:29:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44938 to 44933. [2018-11-12 16:29:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44933 states. [2018-11-12 16:29:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44933 states to 44933 states and 60969 transitions. [2018-11-12 16:29:02,446 INFO L78 Accepts]: Start accepts. Automaton has 44933 states and 60969 transitions. Word has length 216 [2018-11-12 16:29:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:02,447 INFO L480 AbstractCegarLoop]: Abstraction has 44933 states and 60969 transitions. [2018-11-12 16:29:02,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:29:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 44933 states and 60969 transitions. [2018-11-12 16:29:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-12 16:29:02,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:02,453 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:29:02,454 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:02,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:02,454 INFO L82 PathProgramCache]: Analyzing trace with hash -2105762052, now seen corresponding path program 1 times [2018-11-12 16:29:02,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:02,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:02,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:02,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:02,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:02,801 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:29:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:29:03,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:03,071 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:29:03,071 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-12 16:29:03,072 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2679], [2681], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:29:03,083 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:29:03,083 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:29:03,567 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:05,855 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:29:05,856 INFO L272 AbstractInterpreter]: Visited 230 different actions 678 times. Merged at 5 different actions 10 times. Never widened. Performed 13036 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13036 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:29:05,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:05,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:29:06,407 INFO L227 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 72.62% of their original sizes. [2018-11-12 16:29:06,408 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:29:06,791 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-11-12 16:29:06,791 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:29:06,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:29:06,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-11-12 16:29:06,792 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:29:06,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:29:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:29:06,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:29:06,793 INFO L87 Difference]: Start difference. First operand 44933 states and 60969 transitions. Second operand 10 states. Received shutdown request... [2018-11-12 16:30:05,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-12 16:30:05,688 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:30:05,694 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:30:05,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:30:05 BoogieIcfgContainer [2018-11-12 16:30:05,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:30:05,695 INFO L168 Benchmark]: Toolchain (without parser) took 207790.78 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -189.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,696 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:30:05,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2576.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 385.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,698 INFO L168 Benchmark]: Boogie Preprocessor took 322.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,699 INFO L168 Benchmark]: RCFGBuilder took 10253.90 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,700 INFO L168 Benchmark]: TraceAbstraction took 194246.13 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 594.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:30:05,705 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2576.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 385.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10253.90 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194246.13 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 594.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (44933states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (46507 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 194.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 179.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4810 SDtfs, 26525 SDslu, 4519 SDs, 0 SdLazy, 45081 SolverSat, 8729 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 521 GetRequests, 453 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44933occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9979777445094953 AbsIntWeakeningRatio, 0.1118421052631579 AbsIntAvgWeakeningVarsNumRemoved, 10.68640350877193 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 805 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1112 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1104 ConstructedInterpolants, 0 QuantifiedInterpolants, 687647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 162/172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown