java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:23:27,798 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:23:27,801 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:23:27,817 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:23:27,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:23:27,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:23:27,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:23:27,822 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:23:27,823 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:23:27,824 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:23:27,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:23:27,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:23:27,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:23:27,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:23:27,829 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:23:27,830 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:23:27,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:23:27,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:23:27,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:23:27,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:23:27,837 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:23:27,838 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:23:27,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:23:27,846 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:23:27,847 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:23:27,848 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:23:27,849 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:23:27,849 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:23:27,854 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:23:27,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:23:27,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:23:27,857 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:23:27,858 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:23:27,858 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:23:27,860 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:23:27,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:23:27,862 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:23:27,892 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:23:27,893 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:23:27,894 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:23:27,894 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:23:27,894 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:23:27,894 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:23:27,895 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:23:27,896 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:23:27,896 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:23:27,897 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:23:27,897 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:23:27,897 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:23:27,897 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:23:27,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:23:27,897 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:23:27,898 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:23:27,898 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:23:27,898 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:23:27,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:23:27,899 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:23:27,899 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:23:27,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:27,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:23:27,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:23:27,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:23:27,900 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:23:27,900 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:23:27,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:23:27,900 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:23:27,900 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:23:27,901 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:23:27,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:23:27,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:23:27,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:23:27,987 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:23:27,987 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:23:27,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-11-07 06:23:28,059 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5e41175/7e0a06a9daf240768c471b1237e34e9d/FLAGf1d9d3fe3 [2018-11-07 06:23:28,668 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:23:28,670 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-11-07 06:23:28,696 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5e41175/7e0a06a9daf240768c471b1237e34e9d/FLAGf1d9d3fe3 [2018-11-07 06:23:28,719 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5e41175/7e0a06a9daf240768c471b1237e34e9d [2018-11-07 06:23:28,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:23:28,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:23:28,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:28,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:23:28,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:23:28,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:28" (1/1) ... [2018-11-07 06:23:28,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:28, skipping insertion in model container [2018-11-07 06:23:28,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:28" (1/1) ... [2018-11-07 06:23:28,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:23:28,815 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:23:29,353 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:29,358 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:23:29,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:29,518 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:23:29,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29 WrapperNode [2018-11-07 06:23:29,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:29,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:29,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:23:29,520 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:23:29,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:29,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:23:29,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:23:29,679 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:23:29,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... [2018-11-07 06:23:29,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:23:29,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:23:29,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:23:29,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:23:29,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:23:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:23:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:23:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:23:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:23:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:23:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:23:33,891 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:23:33,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:33 BoogieIcfgContainer [2018-11-07 06:23:33,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:23:33,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:23:33,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:23:33,898 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:23:33,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:28" (1/3) ... [2018-11-07 06:23:33,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e7904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:33, skipping insertion in model container [2018-11-07 06:23:33,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:29" (2/3) ... [2018-11-07 06:23:33,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e7904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:33, skipping insertion in model container [2018-11-07 06:23:33,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:33" (3/3) ... [2018-11-07 06:23:33,903 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label18_false-unreach-call_false-termination.c [2018-11-07 06:23:33,914 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:23:33,923 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:23:33,939 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:23:33,992 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:23:33,992 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:23:33,992 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:23:33,992 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:23:33,993 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:23:33,993 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:23:33,993 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:23:33,994 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:23:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:23:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 06:23:34,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:34,032 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] [2018-11-07 06:23:34,035 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:34,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:34,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1102651839, now seen corresponding path program 1 times [2018-11-07 06:23:34,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:34,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:34,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:34,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:34,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:34,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:34,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:23:34,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:34,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:23:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:23:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:34,470 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:23:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:36,167 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:23:36,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:23:36,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-07 06:23:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:36,191 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:23:36,191 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:23:36,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:23:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:23:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:23:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:23:36,283 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 27 [2018-11-07 06:23:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:36,284 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:23:36,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:23:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:23:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 06:23:36,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:36,297 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:36,297 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:36,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash 122089084, now seen corresponding path program 1 times [2018-11-07 06:23:36,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:36,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:36,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:36,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:36,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:36,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:36,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:23:36,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:36,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:23:36,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:23:36,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:23:36,650 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:23:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:40,102 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-11-07 06:23:40,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:23:40,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-11-07 06:23:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:40,115 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 06:23:40,115 INFO L226 Difference]: Without dead ends: 1160 [2018-11-07 06:23:40,121 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:23:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-11-07 06:23:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-11-07 06:23:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-11-07 06:23:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-11-07 06:23:40,200 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 97 [2018-11-07 06:23:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:40,200 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-11-07 06:23:40,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:23:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-11-07 06:23:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 06:23:40,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:40,205 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:40,206 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:40,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1764602551, now seen corresponding path program 1 times [2018-11-07 06:23:40,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:40,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:40,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:40,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:40,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:40,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:40,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:23:40,407 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:40,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:23:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:23:40,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:23:40,409 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-11-07 06:23:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:42,966 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-11-07 06:23:42,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:23:42,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-11-07 06:23:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:42,992 INFO L225 Difference]: With dead ends: 2716 [2018-11-07 06:23:42,992 INFO L226 Difference]: Without dead ends: 1569 [2018-11-07 06:23:42,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:23:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-11-07 06:23:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-11-07 06:23:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-11-07 06:23:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-11-07 06:23:43,078 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 98 [2018-11-07 06:23:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:43,079 INFO L480 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-11-07 06:23:43,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:23:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-11-07 06:23:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 06:23:43,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:43,085 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:43,087 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:43,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash -263336997, now seen corresponding path program 1 times [2018-11-07 06:23:43,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:43,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:43,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:43,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:43,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:43,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:43,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:23:43,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:43,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:23:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:23:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:23:43,259 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-11-07 06:23:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:45,715 INFO L93 Difference]: Finished difference Result 4197 states and 6459 transitions. [2018-11-07 06:23:45,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:23:45,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-11-07 06:23:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:45,749 INFO L225 Difference]: With dead ends: 4197 [2018-11-07 06:23:45,750 INFO L226 Difference]: Without dead ends: 2665 [2018-11-07 06:23:45,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:23:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2018-11-07 06:23:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2559. [2018-11-07 06:23:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2559 states. [2018-11-07 06:23:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3627 transitions. [2018-11-07 06:23:45,858 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3627 transitions. Word has length 100 [2018-11-07 06:23:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:45,859 INFO L480 AbstractCegarLoop]: Abstraction has 2559 states and 3627 transitions. [2018-11-07 06:23:45,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:23:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3627 transitions. [2018-11-07 06:23:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 06:23:45,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:45,861 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:45,862 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:45,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:45,862 INFO L82 PathProgramCache]: Analyzing trace with hash -750379708, now seen corresponding path program 1 times [2018-11-07 06:23:45,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:45,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:45,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:45,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:45,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:46,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:46,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:23:46,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:46,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:23:46,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:23:46,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:46,056 INFO L87 Difference]: Start difference. First operand 2559 states and 3627 transitions. Second operand 4 states. [2018-11-07 06:23:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:48,336 INFO L93 Difference]: Finished difference Result 7200 states and 10600 transitions. [2018-11-07 06:23:48,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:23:48,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-11-07 06:23:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:48,372 INFO L225 Difference]: With dead ends: 7200 [2018-11-07 06:23:48,372 INFO L226 Difference]: Without dead ends: 4647 [2018-11-07 06:23:48,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2018-11-07 06:23:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4647. [2018-11-07 06:23:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2018-11-07 06:23:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6450 transitions. [2018-11-07 06:23:48,551 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6450 transitions. Word has length 101 [2018-11-07 06:23:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:48,552 INFO L480 AbstractCegarLoop]: Abstraction has 4647 states and 6450 transitions. [2018-11-07 06:23:48,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:23:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6450 transitions. [2018-11-07 06:23:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-07 06:23:48,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:48,623 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:48,623 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:48,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash -459245327, now seen corresponding path program 1 times [2018-11-07 06:23:48,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:48,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:48,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:48,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:48,626 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 06:23:48,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:48,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:23:48,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:48,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:23:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:23:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:48,832 INFO L87 Difference]: Start difference. First operand 4647 states and 6450 transitions. Second operand 3 states. [2018-11-07 06:23:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:50,241 INFO L93 Difference]: Finished difference Result 11425 states and 16447 transitions. [2018-11-07 06:23:50,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:23:50,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2018-11-07 06:23:50,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:50,287 INFO L225 Difference]: With dead ends: 11425 [2018-11-07 06:23:50,288 INFO L226 Difference]: Without dead ends: 7158 [2018-11-07 06:23:50,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2018-11-07 06:23:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7154. [2018-11-07 06:23:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7154 states. [2018-11-07 06:23:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 10015 transitions. [2018-11-07 06:23:50,532 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 10015 transitions. Word has length 245 [2018-11-07 06:23:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:50,533 INFO L480 AbstractCegarLoop]: Abstraction has 7154 states and 10015 transitions. [2018-11-07 06:23:50,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:23:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 10015 transitions. [2018-11-07 06:23:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-07 06:23:50,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:50,580 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:50,580 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:50,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:50,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1610952686, now seen corresponding path program 1 times [2018-11-07 06:23:50,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:50,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:50,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:50,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:50,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:51,021 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 06:23:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 40 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:23:51,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:51,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:51,211 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-11-07 06:23:51,214 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:51,280 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:51,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:57,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:57,438 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:23:57,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:57,456 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:02,673 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.44% of their original sizes. [2018-11-07 06:24:02,674 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:02,779 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-11-07 06:24:02,780 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:02,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:02,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 06:24:02,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:02,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:24:02,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:24:02,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:24:02,782 INFO L87 Difference]: Start difference. First operand 7154 states and 10015 transitions. Second operand 6 states. [2018-11-07 06:24:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:18,589 INFO L93 Difference]: Finished difference Result 14487 states and 20255 transitions. [2018-11-07 06:24:18,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:24:18,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2018-11-07 06:24:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:18,628 INFO L225 Difference]: With dead ends: 14487 [2018-11-07 06:24:18,629 INFO L226 Difference]: Without dead ends: 7339 [2018-11-07 06:24:18,664 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:24:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2018-11-07 06:24:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7337. [2018-11-07 06:24:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7337 states. [2018-11-07 06:24:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7337 states to 7337 states and 10206 transitions. [2018-11-07 06:24:18,849 INFO L78 Accepts]: Start accepts. Automaton has 7337 states and 10206 transitions. Word has length 310 [2018-11-07 06:24:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:18,850 INFO L480 AbstractCegarLoop]: Abstraction has 7337 states and 10206 transitions. [2018-11-07 06:24:18,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7337 states and 10206 transitions. [2018-11-07 06:24:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-07 06:24:18,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:18,893 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:18,893 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:18,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1353528260, now seen corresponding path program 1 times [2018-11-07 06:24:18,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:18,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:18,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:18,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:18,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:19,428 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:19,624 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:24:19,843 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:20,171 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 06:24:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 148 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:20,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:20,704 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:20,705 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-11-07 06:24:20,705 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:20,712 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:20,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:27,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:27,710 INFO L272 AbstractInterpreter]: Visited 179 different actions 351 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:24:27,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:27,716 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:31,593 INFO L227 lantSequenceWeakener]: Weakened 392 states. On average, predicates are now at 77.46% of their original sizes. [2018-11-07 06:24:31,593 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:32,168 INFO L415 sIntCurrentIteration]: We unified 394 AI predicates to 394 [2018-11-07 06:24:32,168 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:32,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:32,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:24:32,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:32,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:32,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:32,170 INFO L87 Difference]: Start difference. First operand 7337 states and 10206 transitions. Second operand 10 states. [2018-11-07 06:25:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:24,764 INFO L93 Difference]: Finished difference Result 14667 states and 20388 transitions. [2018-11-07 06:25:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:25:24,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 395 [2018-11-07 06:25:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:24,793 INFO L225 Difference]: With dead ends: 14667 [2018-11-07 06:25:24,794 INFO L226 Difference]: Without dead ends: 7523 [2018-11-07 06:25:24,815 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:25:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2018-11-07 06:25:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7521. [2018-11-07 06:25:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7521 states. [2018-11-07 06:25:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 10353 transitions. [2018-11-07 06:25:24,977 INFO L78 Accepts]: Start accepts. Automaton has 7521 states and 10353 transitions. Word has length 395 [2018-11-07 06:25:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:24,977 INFO L480 AbstractCegarLoop]: Abstraction has 7521 states and 10353 transitions. [2018-11-07 06:25:24,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7521 states and 10353 transitions. [2018-11-07 06:25:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-07 06:25:25,023 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:25,024 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 06:25:25,024 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:25,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash -384340091, now seen corresponding path program 1 times [2018-11-07 06:25:25,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:25,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:25,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:25,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:25,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 278 proven. 250 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 06:25:26,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:26,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:26,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-07 06:25:26,354 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:26,360 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:26,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:33,690 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:33,690 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:25:33,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:33,696 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:37,796 INFO L227 lantSequenceWeakener]: Weakened 492 states. On average, predicates are now at 77.45% of their original sizes. [2018-11-07 06:25:37,797 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:37,878 INFO L415 sIntCurrentIteration]: We unified 494 AI predicates to 494 [2018-11-07 06:25:37,879 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:37,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:37,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:25:37,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:37,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:25:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:25:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:25:37,882 INFO L87 Difference]: Start difference. First operand 7521 states and 10353 transitions. Second operand 10 states. [2018-11-07 06:25:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:50,833 INFO L93 Difference]: Finished difference Result 14483 states and 20114 transitions. [2018-11-07 06:25:50,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:25:50,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 495 [2018-11-07 06:25:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:50,859 INFO L225 Difference]: With dead ends: 14483 [2018-11-07 06:25:50,860 INFO L226 Difference]: Without dead ends: 7151 [2018-11-07 06:25:50,878 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 502 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:25:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2018-11-07 06:25:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 7148. [2018-11-07 06:25:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7148 states. [2018-11-07 06:25:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 9927 transitions. [2018-11-07 06:25:51,156 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 9927 transitions. Word has length 495 [2018-11-07 06:25:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:51,157 INFO L480 AbstractCegarLoop]: Abstraction has 7148 states and 9927 transitions. [2018-11-07 06:25:51,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 9927 transitions. [2018-11-07 06:25:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-11-07 06:25:51,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:51,202 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-07 06:25:51,202 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:51,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:51,203 INFO L82 PathProgramCache]: Analyzing trace with hash 392056957, now seen corresponding path program 1 times [2018-11-07 06:25:51,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:51,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:51,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:51,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:51,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 312 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 06:25:52,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:52,335 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:52,335 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 532 with the following transitions: [2018-11-07 06:25:52,336 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:52,340 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:52,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:04,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:26:04,303 INFO L272 AbstractInterpreter]: Visited 180 different actions 539 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:26:04,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:04,313 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:26:05,938 INFO L227 lantSequenceWeakener]: Weakened 528 states. On average, predicates are now at 80.12% of their original sizes. [2018-11-07 06:26:05,938 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:26:06,073 INFO L415 sIntCurrentIteration]: We unified 530 AI predicates to 530 [2018-11-07 06:26:06,073 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:26:06,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:26:06,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 06:26:06,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:06,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:06,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:26:06,075 INFO L87 Difference]: Start difference. First operand 7148 states and 9927 transitions. Second operand 9 states. [2018-11-07 06:26:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:33,365 INFO L93 Difference]: Finished difference Result 15731 states and 22485 transitions. [2018-11-07 06:26:33,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:26:33,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 531 [2018-11-07 06:26:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:33,401 INFO L225 Difference]: With dead ends: 15731 [2018-11-07 06:26:33,402 INFO L226 Difference]: Without dead ends: 8957 [2018-11-07 06:26:33,425 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 537 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:26:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2018-11-07 06:26:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 8548. [2018-11-07 06:26:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8548 states. [2018-11-07 06:26:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8548 states to 8548 states and 11639 transitions. [2018-11-07 06:26:33,589 INFO L78 Accepts]: Start accepts. Automaton has 8548 states and 11639 transitions. Word has length 531 [2018-11-07 06:26:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:33,590 INFO L480 AbstractCegarLoop]: Abstraction has 8548 states and 11639 transitions. [2018-11-07 06:26:33,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 8548 states and 11639 transitions. [2018-11-07 06:26:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-11-07 06:26:33,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:33,628 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-07 06:26:33,628 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:33,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:33,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2001066597, now seen corresponding path program 1 times [2018-11-07 06:26:33,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:33,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:33,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:33,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:33,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:34,985 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:26:35,402 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-11-07 06:26:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 419 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-07 06:26:36,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:36,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:36,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 605 with the following transitions: [2018-11-07 06:26:36,221 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:36,225 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:36,225 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:49,454 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:49,454 INFO L272 AbstractInterpreter]: Visited 182 different actions 722 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:26:49,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:49,461 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:49,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:49,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:49,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:49,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:49,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 784 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-11-07 06:26:50,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 413 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-07 06:26:51,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:51,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:26:51,608 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:51,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:51,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:26:51,611 INFO L87 Difference]: Start difference. First operand 8548 states and 11639 transitions. Second operand 17 states. [2018-11-07 06:26:52,641 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-11-07 06:26:54,287 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-11-07 06:26:59,876 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 06:27:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:00,783 INFO L93 Difference]: Finished difference Result 17922 states and 25706 transitions. [2018-11-07 06:27:00,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 06:27:00,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 604 [2018-11-07 06:27:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:00,837 INFO L225 Difference]: With dead ends: 17922 [2018-11-07 06:27:00,838 INFO L226 Difference]: Without dead ends: 8476 [2018-11-07 06:27:00,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1218 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2018-11-07 06:27:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2018-11-07 06:27:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 8047. [2018-11-07 06:27:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8047 states. [2018-11-07 06:27:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8047 states to 8047 states and 9679 transitions. [2018-11-07 06:27:01,262 INFO L78 Accepts]: Start accepts. Automaton has 8047 states and 9679 transitions. Word has length 604 [2018-11-07 06:27:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:01,265 INFO L480 AbstractCegarLoop]: Abstraction has 8047 states and 9679 transitions. [2018-11-07 06:27:01,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8047 states and 9679 transitions. [2018-11-07 06:27:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2018-11-07 06:27:01,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:01,302 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:01,302 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:01,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:01,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1974834745, now seen corresponding path program 1 times [2018-11-07 06:27:01,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:01,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:01,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:01,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:01,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:01,825 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 06:27:03,005 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:27:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 327 proven. 676 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-11-07 06:27:04,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:04,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:04,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 733 with the following transitions: [2018-11-07 06:27:04,129 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:04,136 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:04,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:15,794 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:15,794 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:27:15,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:15,800 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:15,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:15,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:15,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:15,810 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:15,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 963 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-11-07 06:27:16,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 474 proven. 169 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2018-11-07 06:27:17,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:17,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2018-11-07 06:27:17,477 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:17,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 06:27:17,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 06:27:17,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-07 06:27:17,479 INFO L87 Difference]: Start difference. First operand 8047 states and 9679 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 06:27:20,858 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-11-07 06:27:20,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 06:27:20,859 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:27:20,863 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:27:20,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:20 BoogieIcfgContainer [2018-11-07 06:27:20,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:27:20,864 INFO L168 Benchmark]: Toolchain (without parser) took 232130.33 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -609.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:20,865 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:27:20,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:20,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:20,867 INFO L168 Benchmark]: Boogie Preprocessor took 104.85 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. [2018-11-07 06:27:20,867 INFO L168 Benchmark]: RCFGBuilder took 4108.64 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 121.7 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:20,868 INFO L168 Benchmark]: TraceAbstraction took 226969.89 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 26.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:20,873 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.85 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 4108.64 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 121.7 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226969.89 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 26.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 64). Cancelled while BasicCegarLoop was constructing difference of abstraction (8047states) and FLOYD_HOARE automaton (currently 25 states, 15 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 41. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.8s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 135.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1727 SDtfs, 16164 SDslu, 2178 SDs, 0 SdLazy, 17480 SolverSat, 3505 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.3s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 4570 GetRequests, 4408 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8548occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.4s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9975717416976129 AbsIntWeakeningRatio, 0.07759119861030689 AbsIntAvgWeakeningVarsNumRemoved, 16.15170816444702 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 993 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 5071 NumberOfCodeBlocks, 5071 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 6391 ConstructedInterpolants, 0 QuantifiedInterpolants, 17964554 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1929 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 7128/9207 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown