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/Problem16_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:13:28,821 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:13:28,823 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:13:28,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:13:28,836 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:13:28,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:13:28,838 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:13:28,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:13:28,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:13:28,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:13:28,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:13:28,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:13:28,851 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:13:28,853 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:13:28,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:13:28,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:13:28,859 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:13:28,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:13:28,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:13:28,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:13:28,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:13:28,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:13:28,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:13:28,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:13:28,873 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:13:28,874 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:13:28,875 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:13:28,876 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:13:28,876 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:13:28,879 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:13:28,879 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:13:28,880 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:13:28,880 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:13:28,880 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:13:28,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:13:28,882 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:13:28,884 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 18:13:28,913 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:13:28,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:13:28,914 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:13:28,914 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:13:28,915 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:13:28,915 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:13:28,916 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:13:28,916 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:13:28,916 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:13:28,916 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:13:28,916 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:13:28,917 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:13:28,917 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:13:28,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:13:28,918 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:13:28,918 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:13:28,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:13:28,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:13:28,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:13:28,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:13:28,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:13:28,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:13:28,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:13:28,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:13:28,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:13:28,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:13:28,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:13:28,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:13:28,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:13:28,923 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:13:28,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:13:28,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:13:28,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:13:28,995 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:13:28,996 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:13:28,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 18:13:29,066 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29561d34/1444917baa8e409f94a446fcac6ba627/FLAG7c753150d [2018-11-07 18:13:29,748 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:13:29,749 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 18:13:29,770 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29561d34/1444917baa8e409f94a446fcac6ba627/FLAG7c753150d [2018-11-07 18:13:29,790 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29561d34/1444917baa8e409f94a446fcac6ba627 [2018-11-07 18:13:29,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:13:29,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:13:29,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:13:29,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:13:29,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:13:29,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:13:29" (1/1) ... [2018-11-07 18:13:29,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e21f6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:29, skipping insertion in model container [2018-11-07 18:13:29,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:13:29" (1/1) ... [2018-11-07 18:13:29,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:13:29,914 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:13:30,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:13:30,659 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:13:30,953 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:13:30,975 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:13:30,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30 WrapperNode [2018-11-07 18:13:30,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:13:30,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:13:30,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:13:30,977 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:13:30,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:13:31,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:13:31,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:13:31,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:13:31,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (1/1) ... [2018-11-07 18:13:31,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:13:31,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:13:31,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:13:31,357 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:13:31,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (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 18:13:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:13:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:13:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:13:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:13:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:13:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:13:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:13:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:13:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:13:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:13:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:13:37,535 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:13:37,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:37 BoogieIcfgContainer [2018-11-07 18:13:37,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:13:37,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:13:37,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:13:37,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:13:37,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:13:29" (1/3) ... [2018-11-07 18:13:37,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3dfb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:37, skipping insertion in model container [2018-11-07 18:13:37,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:30" (2/3) ... [2018-11-07 18:13:37,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3dfb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:37, skipping insertion in model container [2018-11-07 18:13:37,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:37" (3/3) ... [2018-11-07 18:13:37,545 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label22_false-unreach-call.c [2018-11-07 18:13:37,555 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:13:37,565 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:13:37,581 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:13:37,622 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:13:37,622 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:13:37,623 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:13:37,623 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:13:37,623 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:13:37,623 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:13:37,623 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:13:37,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:13:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:13:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 18:13:37,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:37,665 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] [2018-11-07 18:13:37,667 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:37,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2015982012, now seen corresponding path program 1 times [2018-11-07 18:13:37,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:37,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:37,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:37,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:37,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:38,105 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:38,212 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 18:13:38,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:38,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:13:38,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:38,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:13:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:13:38,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:13:38,237 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:13:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:42,003 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:13:42,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:13:42,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 18:13:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:42,028 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:13:42,028 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:13:42,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:13:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:13:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:13:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:13:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 18:13:42,149 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 20 [2018-11-07 18:13:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:42,150 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 18:13:42,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:13:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 18:13:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 18:13:42,157 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:42,157 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:42,158 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:42,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:42,158 INFO L82 PathProgramCache]: Analyzing trace with hash -422584226, now seen corresponding path program 1 times [2018-11-07 18:13:42,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:42,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:42,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:42,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:42,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:42,598 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:42,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:42,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:42,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:42,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:42,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:42,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:42,685 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 18:13:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:49,093 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 18:13:49,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:49,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 18:13:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:49,116 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 18:13:49,116 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 18:13:49,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 18:13:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 18:13:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 18:13:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 18:13:49,211 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 128 [2018-11-07 18:13:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:49,212 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 18:13:49,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 18:13:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 18:13:49,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:49,218 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:49,218 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:49,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1897752243, now seen corresponding path program 1 times [2018-11-07 18:13:49,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:49,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:49,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:49,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:49,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:49,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:49,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:49,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:49,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:49,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:49,521 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 18:13:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:54,291 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 18:13:54,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:54,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 18:13:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:54,316 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 18:13:54,316 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 18:13:54,322 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 18:13:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 18:13:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 18:13:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 18:13:54,400 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 131 [2018-11-07 18:13:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:54,401 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 18:13:54,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 18:13:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 18:13:54,413 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:54,413 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:13:54,414 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:54,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1121354911, now seen corresponding path program 1 times [2018-11-07 18:13:54,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:54,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:54,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:54,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:54,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:13:54,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:13:54,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:13:54,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 18:13:54,703 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:13:54,750 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:13:54,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:13:55,475 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:13:55,477 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:13:55,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:55,514 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:13:56,320 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 18:13:56,320 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:13:58,182 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-07 18:13:58,183 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:13:58,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:13:58,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:13:58,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:58,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:13:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:13:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:13:58,186 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 18:14:02,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:14:28,852 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-07 18:14:28,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:14:28,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 247 [2018-11-07 18:14:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:14:28,867 INFO L225 Difference]: With dead ends: 5285 [2018-11-07 18:14:28,867 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 18:14:28,876 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:14:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 18:14:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-07 18:14:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 18:14:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 18:14:28,949 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 247 [2018-11-07 18:14:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:14:28,950 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 18:14:28,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:14:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 18:14:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-11-07 18:14:28,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:14:28,957 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:14:28,957 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:14:28,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:28,958 INFO L82 PathProgramCache]: Analyzing trace with hash 709063263, now seen corresponding path program 1 times [2018-11-07 18:14:28,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:14:28,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:28,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:14:28,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:28,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:14:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:14:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 134 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 18:14:29,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:14:29,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:14:29,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-11-07 18:14:29,299 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:14:29,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:14:29,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:14:29,407 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:30,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:14:30,295 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 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 18:14:30,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:30,303 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:14:30,922 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 18:14:30,922 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:14:32,677 INFO L415 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2018-11-07 18:14:32,677 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:14:32,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:14:32,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 18:14:32,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:14:32,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:14:32,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:14:32,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:14:32,681 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 22 states. [2018-11-07 18:15:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:09,513 INFO L93 Difference]: Finished difference Result 6714 states and 9904 transitions. [2018-11-07 18:15:09,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:15:09,513 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 339 [2018-11-07 18:15:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:09,535 INFO L225 Difference]: With dead ends: 6714 [2018-11-07 18:15:09,535 INFO L226 Difference]: Without dead ends: 4246 [2018-11-07 18:15:09,545 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 351 GetRequests, 295 SyntacticMatches, 23 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 18:15:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2018-11-07 18:15:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3534. [2018-11-07 18:15:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3534 states. [2018-11-07 18:15:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 4851 transitions. [2018-11-07 18:15:09,646 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 4851 transitions. Word has length 339 [2018-11-07 18:15:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:09,647 INFO L480 AbstractCegarLoop]: Abstraction has 3534 states and 4851 transitions. [2018-11-07 18:15:09,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:15:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 4851 transitions. [2018-11-07 18:15:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-11-07 18:15:09,655 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:09,656 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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 18:15:09,656 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:09,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:09,657 INFO L82 PathProgramCache]: Analyzing trace with hash 919764583, now seen corresponding path program 1 times [2018-11-07 18:15:09,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:09,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:09,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:09,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:09,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:10,166 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 18:15:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 158 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:15:10,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:10,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:10,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 376 with the following transitions: [2018-11-07 18:15:10,843 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:10,847 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:10,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:10,978 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:11,326 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:11,327 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 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 18:15:11,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:11,365 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:11,982 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 77.61% of their original sizes. [2018-11-07 18:15:11,982 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:13,402 INFO L415 sIntCurrentIteration]: We unified 374 AI predicates to 374 [2018-11-07 18:15:13,403 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:13,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:13,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [13] total 36 [2018-11-07 18:15:13,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:13,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:15:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:15:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:15:13,404 INFO L87 Difference]: Start difference. First operand 3534 states and 4851 transitions. Second operand 25 states. [2018-11-07 18:15:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:55,086 INFO L93 Difference]: Finished difference Result 8198 states and 11629 transitions. [2018-11-07 18:15:55,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 18:15:55,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 375 [2018-11-07 18:15:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:55,112 INFO L225 Difference]: With dead ends: 8198 [2018-11-07 18:15:55,112 INFO L226 Difference]: Without dead ends: 5346 [2018-11-07 18:15:55,123 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 393 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=341, Invalid=1551, Unknown=0, NotChecked=0, Total=1892 [2018-11-07 18:15:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2018-11-07 18:15:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 4763. [2018-11-07 18:15:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2018-11-07 18:15:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6135 transitions. [2018-11-07 18:15:55,258 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6135 transitions. Word has length 375 [2018-11-07 18:15:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:55,259 INFO L480 AbstractCegarLoop]: Abstraction has 4763 states and 6135 transitions. [2018-11-07 18:15:55,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 18:15:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6135 transitions. [2018-11-07 18:15:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-11-07 18:15:55,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:55,276 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:55,276 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:55,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1537867705, now seen corresponding path program 1 times [2018-11-07 18:15:55,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:55,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:55,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:55,916 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 18:15:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 149 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 18:15:56,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:56,422 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:56,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 488 with the following transitions: [2018-11-07 18:15:56,423 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:56,429 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:56,429 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:56,756 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:56,757 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 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 18:15:56,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:56,761 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:57,782 INFO L227 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 18:15:57,782 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:59,313 INFO L415 sIntCurrentIteration]: We unified 486 AI predicates to 486 [2018-11-07 18:15:59,313 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:59,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:59,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-07 18:15:59,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:59,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:15:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:15:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:15:59,316 INFO L87 Difference]: Start difference. First operand 4763 states and 6135 transitions. Second operand 18 states. [2018-11-07 18:16:00,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:14,427 INFO L93 Difference]: Finished difference Result 8945 states and 11937 transitions. [2018-11-07 18:16:14,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:16:14,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 487 [2018-11-07 18:16:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:14,449 INFO L225 Difference]: With dead ends: 8945 [2018-11-07 18:16:14,449 INFO L226 Difference]: Without dead ends: 5399 [2018-11-07 18:16:14,460 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 502 GetRequests, 422 SyntacticMatches, 48 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:16:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2018-11-07 18:16:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 5394. [2018-11-07 18:16:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5394 states. [2018-11-07 18:16:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 6800 transitions. [2018-11-07 18:16:14,590 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 6800 transitions. Word has length 487 [2018-11-07 18:16:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:14,591 INFO L480 AbstractCegarLoop]: Abstraction has 5394 states and 6800 transitions. [2018-11-07 18:16:14,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:16:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 6800 transitions. [2018-11-07 18:16:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-07 18:16:14,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:14,608 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:14,608 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:14,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1635361833, now seen corresponding path program 1 times [2018-11-07 18:16:14,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:14,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:14,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:14,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:14,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:15,065 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:16:15,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:15,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:15,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-07 18:16:15,723 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:15,728 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:15,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:18,273 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:18,273 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:16:18,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:18,280 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:18,901 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 78.39% of their original sizes. [2018-11-07 18:16:18,901 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:19,244 INFO L415 sIntCurrentIteration]: We unified 494 AI predicates to 494 [2018-11-07 18:16:19,245 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:19,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:19,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 18:16:19,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:19,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:16:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:16:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:16:19,248 INFO L87 Difference]: Start difference. First operand 5394 states and 6800 transitions. Second operand 22 states. [2018-11-07 18:16:21,816 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:36,276 INFO L93 Difference]: Finished difference Result 9581 states and 12617 transitions. [2018-11-07 18:16:36,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 18:16:36,276 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 495 [2018-11-07 18:16:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:36,298 INFO L225 Difference]: With dead ends: 9581 [2018-11-07 18:16:36,298 INFO L226 Difference]: Without dead ends: 6035 [2018-11-07 18:16:36,309 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 505 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:16:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2018-11-07 18:16:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 6027. [2018-11-07 18:16:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6027 states. [2018-11-07 18:16:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 7475 transitions. [2018-11-07 18:16:36,437 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 7475 transitions. Word has length 495 [2018-11-07 18:16:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:36,438 INFO L480 AbstractCegarLoop]: Abstraction has 6027 states and 7475 transitions. [2018-11-07 18:16:36,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:16:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 7475 transitions. [2018-11-07 18:16:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-11-07 18:16:36,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:36,460 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:16:36,460 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:36,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:36,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2060586171, now seen corresponding path program 1 times [2018-11-07 18:16:36,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:36,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:36,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:36,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:36,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:36,994 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:16:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 152 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 18:16:38,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:38,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:38,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 580 with the following transitions: [2018-11-07 18:16:38,038 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:38,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:38,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:38,105 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:39,197 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:39,197 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:16:39,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:39,204 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:39,642 INFO L227 lantSequenceWeakener]: Weakened 576 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 18:16:39,643 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:39,740 INFO L415 sIntCurrentIteration]: We unified 578 AI predicates to 578 [2018-11-07 18:16:39,740 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:39,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:39,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 18:16:39,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:39,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:16:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:16:39,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:16:39,742 INFO L87 Difference]: Start difference. First operand 6027 states and 7475 transitions. Second operand 10 states. [2018-11-07 18:16:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:48,640 INFO L93 Difference]: Finished difference Result 10947 states and 14110 transitions. [2018-11-07 18:16:48,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 18:16:48,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 579 [2018-11-07 18:16:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:48,659 INFO L225 Difference]: With dead ends: 10947 [2018-11-07 18:16:48,659 INFO L226 Difference]: Without dead ends: 7061 [2018-11-07 18:16:48,671 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 586 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:16:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2018-11-07 18:16:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7045. [2018-11-07 18:16:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2018-11-07 18:16:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 8550 transitions. [2018-11-07 18:16:48,796 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 8550 transitions. Word has length 579 [2018-11-07 18:16:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:48,797 INFO L480 AbstractCegarLoop]: Abstraction has 7045 states and 8550 transitions. [2018-11-07 18:16:48,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:16:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 8550 transitions. [2018-11-07 18:16:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-11-07 18:16:48,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:48,813 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:48,813 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:48,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 895240224, now seen corresponding path program 1 times [2018-11-07 18:16:48,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:48,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:48,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:48,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:48,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:49,339 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 64 proven. 389 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-07 18:16:49,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:49,711 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:49,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 597 with the following transitions: [2018-11-07 18:16:49,711 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:49,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:49,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:49,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:52,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:52,246 INFO L272 AbstractInterpreter]: Visited 258 different actions 2546 times. Merged at 7 different actions 65 times. Widened at 1 different actions 5 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:16:52,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:52,255 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:52,926 INFO L227 lantSequenceWeakener]: Weakened 149 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 18:16:52,926 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:53,284 INFO L415 sIntCurrentIteration]: We unified 595 AI predicates to 595 [2018-11-07 18:16:53,284 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:53,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:53,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 18:16:53,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:53,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 18:16:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 18:16:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:16:53,286 INFO L87 Difference]: Start difference. First operand 7045 states and 8550 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 18:17:08,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 18:17:08,077 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:17:08,082 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:17:08,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:17:08 BoogieIcfgContainer [2018-11-07 18:17:08,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:17:08,083 INFO L168 Benchmark]: Toolchain (without parser) took 218280.42 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 894.5 MB in the end (delta: 532.0 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,084 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:17:08,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1171.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 213.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,087 INFO L168 Benchmark]: Boogie Preprocessor took 165.06 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,087 INFO L168 Benchmark]: RCFGBuilder took 6179.71 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: 250.9 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,088 INFO L168 Benchmark]: TraceAbstraction took 210545.96 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 894.5 MB in the end (delta: 1.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:17:08,093 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1171.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 213.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.06 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6179.71 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: 250.9 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210545.96 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 894.5 MB in the end (delta: 1.0 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (7045states) and FLOYD_HOARE automaton (currently 30 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (3751 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 180.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2824 SDtfs, 31021 SDslu, 2270 SDs, 0 SdLazy, 28062 SolverSat, 4394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.8s Time, PredicateUnifierStatistics: 14 DeclaredPredicates, 3220 GetRequests, 2890 SyntacticMatches, 118 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7045occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.9s AbstIntTime, 7 AbstIntIterations, 7 AbstIntStrong, 0.9977073543947051 AbsIntWeakeningRatio, 0.0739312118289939 AbsIntAvgWeakeningVarsNumRemoved, 12.963355834136934 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 1360 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3397 NumberOfCodeBlocks, 3397 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3387 ConstructedInterpolants, 0 QuantifiedInterpolants, 10509646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 1666/2987 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown