java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:47:34,910 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:47:34,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:47:34,924 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:47:34,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:47:34,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:47:34,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:47:34,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:47:34,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:47:34,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:47:34,932 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:47:34,932 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:47:34,933 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:47:34,934 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:47:34,936 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:47:34,936 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:47:34,937 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:47:34,939 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:47:34,941 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:47:34,943 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:47:34,944 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:47:34,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:47:34,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:47:34,952 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:47:34,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:47:34,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:47:34,954 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:47:34,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:47:34,958 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:47:34,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:47:34,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:47:34,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 20:47:34,967 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:47:35,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:47:35,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:47:35,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:47:35,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:47:35,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:47:35,003 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:47:35,003 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:47:35,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:47:35,003 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:47:35,004 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:47:35,004 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:47:35,004 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:47:35,004 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:47:35,005 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:47:35,005 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:47:35,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:47:35,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:47:35,006 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:47:35,006 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:47:35,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:47:35,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:47:35,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:47:35,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:47:35,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:47:35,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:47:35,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:47:35,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:47:35,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:47:35,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:47:35,008 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:47:35,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:47:35,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:47:35,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:47:35,009 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:47:35,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:47:35,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:47:35,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:47:35,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:47:35,095 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:47:35,096 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:47:35,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label54_true-unreach-call.c [2018-11-07 20:47:35,155 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b1c0aad/e207c5cc34804b6e9f1e408c4462218c/FLAG61f6a8ac4 [2018-11-07 20:47:35,860 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:47:35,863 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label54_true-unreach-call.c [2018-11-07 20:47:35,884 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b1c0aad/e207c5cc34804b6e9f1e408c4462218c/FLAG61f6a8ac4 [2018-11-07 20:47:35,900 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b1c0aad/e207c5cc34804b6e9f1e408c4462218c [2018-11-07 20:47:35,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:47:35,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:47:35,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:47:35,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:47:35,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:47:35,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:35" (1/1) ... [2018-11-07 20:47:35,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:35, skipping insertion in model container [2018-11-07 20:47:35,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:35" (1/1) ... [2018-11-07 20:47:35,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:47:36,039 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:47:36,994 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:47:36,998 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:47:37,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:47:37,305 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:47:37,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37 WrapperNode [2018-11-07 20:47:37,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:47:37,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:47:37,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:47:37,307 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:47:37,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:47:37,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:47:37,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:47:37,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:47:37,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (1/1) ... [2018-11-07 20:47:37,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:47:37,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:47:37,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:47:37,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:47:37,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (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 20:47:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:47:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:47:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:47:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:47:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:47:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:47:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:47:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:47:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:47:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:47:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:47:44,496 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:47:44,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:44 BoogieIcfgContainer [2018-11-07 20:47:44,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:47:44,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:47:44,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:47:44,501 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:47:44,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:47:35" (1/3) ... [2018-11-07 20:47:44,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac10808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:44, skipping insertion in model container [2018-11-07 20:47:44,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:37" (2/3) ... [2018-11-07 20:47:44,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac10808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:44, skipping insertion in model container [2018-11-07 20:47:44,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:44" (3/3) ... [2018-11-07 20:47:44,506 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label54_true-unreach-call.c [2018-11-07 20:47:44,517 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:47:44,526 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:47:44,542 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:47:44,585 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:47:44,586 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:47:44,586 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:47:44,586 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:47:44,586 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:47:44,586 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:47:44,587 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:47:44,587 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:47:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:47:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 20:47:44,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:44,632 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:44,634 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:44,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash -62143143, now seen corresponding path program 1 times [2018-11-07 20:47:44,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:44,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:44,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:44,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:44,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:45,118 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 20:47:45,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:47:45,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:47:45,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:45,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:47:45,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:47:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:47:45,146 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 20:47:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:48,837 INFO L93 Difference]: Finished difference Result 1192 states and 2147 transitions. [2018-11-07 20:47:48,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:47:48,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 20:47:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:48,864 INFO L225 Difference]: With dead ends: 1192 [2018-11-07 20:47:48,865 INFO L226 Difference]: Without dead ends: 752 [2018-11-07 20:47:48,875 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:47:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2018-11-07 20:47:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2018-11-07 20:47:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-07 20:47:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1322 transitions. [2018-11-07 20:47:49,004 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1322 transitions. Word has length 47 [2018-11-07 20:47:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:49,005 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1322 transitions. [2018-11-07 20:47:49,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:47:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1322 transitions. [2018-11-07 20:47:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 20:47:49,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:49,014 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:49,014 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:49,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash -207953228, now seen corresponding path program 1 times [2018-11-07 20:47:49,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:49,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:49,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:49,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:49,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:47:49,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:49,441 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:49,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-11-07 20:47:49,446 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:49,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:49,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:50,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:50,016 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:47:50,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:50,067 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:50,497 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 78.28% of their original sizes. [2018-11-07 20:47:50,498 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:50,715 INFO L415 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2018-11-07 20:47:50,715 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:50,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:50,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 20:47:50,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:50,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:47:50,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:47:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:47:50,720 INFO L87 Difference]: Start difference. First operand 752 states and 1322 transitions. Second operand 7 states. [2018-11-07 20:47:53,219 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:20,174 INFO L93 Difference]: Finished difference Result 1808 states and 3199 transitions. [2018-11-07 20:48:20,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:48:20,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2018-11-07 20:48:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:20,182 INFO L225 Difference]: With dead ends: 1808 [2018-11-07 20:48:20,182 INFO L226 Difference]: Without dead ends: 1062 [2018-11-07 20:48:20,186 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:48:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2018-11-07 20:48:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2018-11-07 20:48:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2018-11-07 20:48:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1637 transitions. [2018-11-07 20:48:20,223 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1637 transitions. Word has length 128 [2018-11-07 20:48:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:20,224 INFO L480 AbstractCegarLoop]: Abstraction has 1060 states and 1637 transitions. [2018-11-07 20:48:20,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:48:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1637 transitions. [2018-11-07 20:48:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 20:48:20,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:20,230 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:48:20,230 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:20,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 389944670, now seen corresponding path program 1 times [2018-11-07 20:48:20,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:20,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:20,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:20,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:20,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:48:20,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:20,985 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:20,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-07 20:48:20,986 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:20,991 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:20,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:21,062 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:22,322 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:22,323 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:22,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:22,370 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:22,949 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.06% of their original sizes. [2018-11-07 20:48:22,949 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:48:25,743 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-07 20:48:25,743 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:48:25,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:48:25,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-11-07 20:48:25,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:25,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:48:25,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:48:25,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:48:25,745 INFO L87 Difference]: Start difference. First operand 1060 states and 1637 transitions. Second operand 15 states. [2018-11-07 20:48:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:55,865 INFO L93 Difference]: Finished difference Result 3274 states and 5395 transitions. [2018-11-07 20:48:55,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 20:48:55,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 224 [2018-11-07 20:48:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:55,879 INFO L225 Difference]: With dead ends: 3274 [2018-11-07 20:48:55,879 INFO L226 Difference]: Without dead ends: 2528 [2018-11-07 20:48:55,883 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 133 SyntacticMatches, 77 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:48:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2018-11-07 20:48:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2248. [2018-11-07 20:48:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2248 states. [2018-11-07 20:48:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2875 transitions. [2018-11-07 20:48:55,946 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2875 transitions. Word has length 224 [2018-11-07 20:48:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:55,947 INFO L480 AbstractCegarLoop]: Abstraction has 2248 states and 2875 transitions. [2018-11-07 20:48:55,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:48:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2875 transitions. [2018-11-07 20:48:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-07 20:48:55,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:55,954 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:55,955 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:55,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash -323235175, now seen corresponding path program 1 times [2018-11-07 20:48:55,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:55,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:55,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:55,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:55,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:48:56,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:56,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:56,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 310 with the following transitions: [2018-11-07 20:48:56,724 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:56,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:56,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:56,910 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:58,126 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:58,126 INFO L272 AbstractInterpreter]: Visited 189 different actions 554 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:58,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:58,128 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:58,665 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.06% of their original sizes. [2018-11-07 20:48:58,666 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:49:00,453 INFO L415 sIntCurrentIteration]: We unified 308 AI predicates to 308 [2018-11-07 20:49:00,454 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:49:00,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:49:00,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 20:49:00,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:00,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:49:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:49:00,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:49:00,457 INFO L87 Difference]: Start difference. First operand 2248 states and 2875 transitions. Second operand 17 states. [2018-11-07 20:49:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:46,974 INFO L93 Difference]: Finished difference Result 4469 states and 6874 transitions. [2018-11-07 20:49:46,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:49:46,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 309 [2018-11-07 20:49:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:46,991 INFO L225 Difference]: With dead ends: 4469 [2018-11-07 20:49:46,991 INFO L226 Difference]: Without dead ends: 3723 [2018-11-07 20:49:46,996 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 321 GetRequests, 248 SyntacticMatches, 45 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2018-11-07 20:49:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2018-11-07 20:49:47,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3160. [2018-11-07 20:49:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-11-07 20:49:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3824 transitions. [2018-11-07 20:49:47,072 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3824 transitions. Word has length 309 [2018-11-07 20:49:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:47,073 INFO L480 AbstractCegarLoop]: Abstraction has 3160 states and 3824 transitions. [2018-11-07 20:49:47,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:49:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3824 transitions. [2018-11-07 20:49:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-07 20:49:47,081 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:47,082 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:47,082 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:47,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1217084529, now seen corresponding path program 1 times [2018-11-07 20:49:47,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:47,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:47,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:47,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:47,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 9 proven. 74 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 20:49:47,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:47,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:47,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-11-07 20:49:47,831 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:49:47,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:47,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:47,947 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:49:48,406 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:49:48,406 INFO L272 AbstractInterpreter]: Visited 246 different actions 725 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:49:48,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:48,412 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:49:48,794 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.06% of their original sizes. [2018-11-07 20:49:48,794 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:49:49,348 INFO L415 sIntCurrentIteration]: We unified 365 AI predicates to 365 [2018-11-07 20:49:49,348 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:49:49,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:49:49,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-07 20:49:49,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:49,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:49:49,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:49:49,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:49:49,351 INFO L87 Difference]: Start difference. First operand 3160 states and 3824 transitions. Second operand 18 states. [2018-11-07 20:50:53,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:53,221 INFO L93 Difference]: Finished difference Result 5335 states and 7745 transitions. [2018-11-07 20:50:53,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:50:53,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 366 [2018-11-07 20:50:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:53,251 INFO L225 Difference]: With dead ends: 5335 [2018-11-07 20:50:53,252 INFO L226 Difference]: Without dead ends: 4589 [2018-11-07 20:50:53,258 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 378 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2018-11-07 20:50:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-11-07 20:50:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4024. [2018-11-07 20:50:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4024 states. [2018-11-07 20:50:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 4725 transitions. [2018-11-07 20:50:53,392 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 4725 transitions. Word has length 366 [2018-11-07 20:50:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:53,393 INFO L480 AbstractCegarLoop]: Abstraction has 4024 states and 4725 transitions. [2018-11-07 20:50:53,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:50:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 4725 transitions. [2018-11-07 20:50:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-07 20:50:53,403 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:53,404 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:53,404 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:53,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1212082352, now seen corresponding path program 1 times [2018-11-07 20:50:53,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:53,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:53,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:53,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:50:54,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:50:54,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:50:54,233 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-11-07 20:50:54,233 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1382], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:50:54,238 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:50:54,238 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:50:54,404 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:50:55,719 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:50:55,720 INFO L272 AbstractInterpreter]: Visited 247 different actions 1692 times. Merged at 5 different actions 29 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:50:55,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:55,730 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:50:56,441 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 78.26% of their original sizes. [2018-11-07 20:50:56,441 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:50:57,341 INFO L415 sIntCurrentIteration]: We unified 366 AI predicates to 366 [2018-11-07 20:50:57,341 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:50:57,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:50:57,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [11] total 30 [2018-11-07 20:50:57,342 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:57,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:50:57,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:50:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:50:57,343 INFO L87 Difference]: Start difference. First operand 4024 states and 4725 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 20:51:15,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:51:15,315 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:51:15,322 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:51:15,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:51:15 BoogieIcfgContainer [2018-11-07 20:51:15,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:51:15,324 INFO L168 Benchmark]: Toolchain (without parser) took 219412.52 ms. Allocated memory was 1.5 GB in the beginning and 6.1 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,326 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:51:15,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1392.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,328 INFO L168 Benchmark]: Boogie Preprocessor took 206.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,329 INFO L168 Benchmark]: RCFGBuilder took 6770.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,330 INFO L168 Benchmark]: TraceAbstraction took 210825.16 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:51:15,335 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1392.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6770.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.1 MB). Peak memory consumption was 284.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210825.16 ms. Allocated memory was 2.3 GB in the beginning and 6.1 GB in the end (delta: 3.8 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (4024states) and FLOYD_HOARE automaton (currently 25 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (2407 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 191.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2208 SDtfs, 23755 SDslu, 1476 SDs, 0 SdLazy, 21819 SolverSat, 4356 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.1s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1444 GetRequests, 1199 SyntacticMatches, 128 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.4s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976159445358437 AbsIntWeakeningRatio, 0.0892728581713463 AbsIntAvgWeakeningVarsNumRemoved, 10.25845932325414 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 1410 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1441 NumberOfCodeBlocks, 1441 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1435 ConstructedInterpolants, 0 QuantifiedInterpolants, 2543012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 568/684 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown