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_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:49:39,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:49:39,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:49:39,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:49:39,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:49:39,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:49:39,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:49:39,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:49:39,877 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:49:39,878 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:49:39,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:49:39,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:49:39,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:49:39,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:49:39,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:49:39,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:49:39,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:49:39,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:49:39,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:49:39,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:49:39,904 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:49:39,908 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:49:39,914 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:49:39,914 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:49:39,915 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:49:39,916 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:49:39,917 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:49:39,918 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:49:39,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:49:39,926 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:49:39,926 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:49:39,927 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:49:39,927 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:49:39,927 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:49:39,932 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:49:39,933 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:49:39,933 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:49:39,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:49:39,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:49:39,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:49:39,967 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:49:39,967 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:49:39,967 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:49:39,968 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:49:39,968 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:49:39,968 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:49:39,968 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:49:39,968 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:49:39,969 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:49:39,972 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:49:39,973 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:49:39,973 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:49:39,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:49:39,974 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:49:39,974 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:49:39,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:49:39,974 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:49:39,974 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:49:39,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:49:39,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:49:39,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:49:39,975 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:49:39,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:49:39,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:49:39,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:49:39,977 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:49:39,977 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:49:39,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:49:39,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:49:39,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:49:39,978 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:49:39,978 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:49:40,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:49:40,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:49:40,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:49:40,073 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:49:40,073 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:49:40,074 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12_true-unreach-call.c [2018-11-07 20:49:40,135 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62205f21/a69f8462a2ee464fbb3ac0698d357589/FLAG86845974e [2018-11-07 20:49:40,732 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:49:40,732 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label12_true-unreach-call.c [2018-11-07 20:49:40,777 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62205f21/a69f8462a2ee464fbb3ac0698d357589/FLAG86845974e [2018-11-07 20:49:40,795 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62205f21/a69f8462a2ee464fbb3ac0698d357589 [2018-11-07 20:49:40,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:49:40,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:49:40,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:49:40,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:49:40,814 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:49:40,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:49:40" (1/1) ... [2018-11-07 20:49:40,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc80c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:40, skipping insertion in model container [2018-11-07 20:49:40,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:49:40" (1/1) ... [2018-11-07 20:49:40,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:49:40,926 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:49:41,659 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:49:41,665 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:49:41,914 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:49:41,937 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:49:41,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41 WrapperNode [2018-11-07 20:49:41,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:49:41,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:49:41,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:49:41,940 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:49:41,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:49:42,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:49:42,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:49:42,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:49:42,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... [2018-11-07 20:49:42,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:49:42,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:49:42,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:49:42,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:49:42,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:49:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:49:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:49:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:49:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:49:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:49:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:49:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:49:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:49:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:49:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:49:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:49:48,950 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:49:48,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:49:48 BoogieIcfgContainer [2018-11-07 20:49:48,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:49:48,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:49:48,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:49:48,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:49:48,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:49:40" (1/3) ... [2018-11-07 20:49:48,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb1cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:49:48, skipping insertion in model container [2018-11-07 20:49:48,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:41" (2/3) ... [2018-11-07 20:49:48,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb1cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:49:48, skipping insertion in model container [2018-11-07 20:49:48,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:49:48" (3/3) ... [2018-11-07 20:49:48,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label12_true-unreach-call.c [2018-11-07 20:49:48,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:49:48,983 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:49:48,998 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:49:49,042 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:49:49,043 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:49:49,043 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:49:49,043 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:49:49,043 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:49:49,043 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:49:49,043 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:49:49,044 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:49:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:49:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 20:49:49,089 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:49,090 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:49,092 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:49,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash 806508676, now seen corresponding path program 1 times [2018-11-07 20:49:49,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:49,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:49,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:49,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:49,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:49,612 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:49:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:49:49,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:49:49,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:49:49,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:49,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:49:49,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:49:49,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:49:49,762 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:49:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:53,037 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:49:53,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:49:53,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 20:49:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:53,064 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:49:53,065 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:49:53,073 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 20:49:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:49:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:49:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:49:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 20:49:53,202 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 46 [2018-11-07 20:49:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:53,203 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 20:49:53,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:49:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 20:49:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 20:49:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:53,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:53,217 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:53,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash 875777906, now seen corresponding path program 1 times [2018-11-07 20:49:53,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:53,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:53,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:53,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:53,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:49:53,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:49:53,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:49:53,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:53,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:49:53,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:49:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:49:53,614 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 20:49:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:58,936 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 20:49:58,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:49:58,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-07 20:49:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:58,951 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 20:49:58,951 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 20:49:58,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:49:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 20:49:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 20:49:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 20:49:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 20:49:59,032 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 116 [2018-11-07 20:49:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:59,032 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 20:49:59,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:49:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 20:49:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 20:49:59,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:59,046 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:59,046 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:59,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash -545095373, now seen corresponding path program 1 times [2018-11-07 20:49:59,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:59,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:59,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:59,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:59,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:49:59,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:49:59,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:49:59,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:59,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:49:59,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:49:59,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:49:59,323 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 20:50:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:04,049 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 20:50:04,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:50:04,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 20:50:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:04,079 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 20:50:04,080 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 20:50:04,089 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 20:50:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 20:50:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 20:50:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 20:50:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 20:50:04,178 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 145 [2018-11-07 20:50:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:04,180 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 20:50:04,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:50:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 20:50:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 20:50:04,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:04,184 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:04,186 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:04,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1167752721, now seen corresponding path program 1 times [2018-11-07 20:50:04,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:04,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:04,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:04,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:50:04,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:50:04,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:50:04,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:50:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:50:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:50:04,480 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 20:50:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:07,962 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 20:50:07,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:50:07,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-11-07 20:50:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:07,989 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 20:50:07,989 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 20:50:08,000 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 20:50:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 20:50:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 20:50:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 20:50:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 20:50:08,106 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 163 [2018-11-07 20:50:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:08,106 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 20:50:08,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:50:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 20:50:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 20:50:08,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:08,111 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:08,111 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:08,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:08,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1830344664, now seen corresponding path program 1 times [2018-11-07 20:50:08,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:08,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:08,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:08,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:08,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 106 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:50:08,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:50:08,487 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:50:08,489 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 20:50:08,492 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [672], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:50:08,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:50:08,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:50:09,374 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:50:09,376 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:50:09,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:09,411 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:50:10,216 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-07 20:50:10,216 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:50:11,885 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 20:50:11,886 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:50:11,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:50:11,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 20:50:11,887 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:11,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:50:11,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:50:11,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:50:11,889 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 11 states. [2018-11-07 20:50:17,637 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:50:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:39,647 INFO L93 Difference]: Finished difference Result 7427 states and 10353 transitions. [2018-11-07 20:50:39,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:50:39,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2018-11-07 20:50:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:39,667 INFO L225 Difference]: With dead ends: 7427 [2018-11-07 20:50:39,667 INFO L226 Difference]: Without dead ends: 3888 [2018-11-07 20:50:39,681 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:50:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2018-11-07 20:50:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3883. [2018-11-07 20:50:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-07 20:50:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-07 20:50:39,771 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 246 [2018-11-07 20:50:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:39,772 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-07 20:50:39,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:50:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-07 20:50:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-07 20:50:39,779 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:39,780 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:39,780 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:39,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1010761782, now seen corresponding path program 1 times [2018-11-07 20:50:39,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:39,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:39,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:39,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:39,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:40,095 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 20:50:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 189 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 20:50:40,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:50:40,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:50:40,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-11-07 20:50:40,792 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [672], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:50:40,797 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:50:40,797 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:50:41,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:50:41,723 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:50:41,723 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:50:41,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:41,730 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:50:42,324 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 20:50:42,324 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:50:43,215 INFO L415 sIntCurrentIteration]: We unified 337 AI predicates to 337 [2018-11-07 20:50:43,215 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:50:43,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:50:43,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-07 20:50:43,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:43,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:50:43,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:50:43,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:50:43,217 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 18 states. [2018-11-07 20:51:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:23,165 INFO L93 Difference]: Finished difference Result 8610 states and 11687 transitions. [2018-11-07 20:51:23,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:51:23,165 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 338 [2018-11-07 20:51:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:23,185 INFO L225 Difference]: With dead ends: 8610 [2018-11-07 20:51:23,186 INFO L226 Difference]: Without dead ends: 5071 [2018-11-07 20:51:23,199 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 347 GetRequests, 306 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:51:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2018-11-07 20:51:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4839. [2018-11-07 20:51:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2018-11-07 20:51:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 6322 transitions. [2018-11-07 20:51:23,312 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 6322 transitions. Word has length 338 [2018-11-07 20:51:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:23,312 INFO L480 AbstractCegarLoop]: Abstraction has 4839 states and 6322 transitions. [2018-11-07 20:51:23,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:51:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 6322 transitions. [2018-11-07 20:51:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-11-07 20:51:23,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:23,323 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:51:23,323 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:23,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash -768564542, now seen corresponding path program 1 times [2018-11-07 20:51:23,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:23,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:23,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:23,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:23,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:24,110 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:51:24,533 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 20:51:24,757 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-11-07 20:51:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 248 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-07 20:51:25,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:51:25,209 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:51:25,209 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-11-07 20:51:25,210 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [672], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:51:25,214 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:51:25,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:51:25,341 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:51:25,711 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:51:25,711 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:51:25,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:25,750 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:51:26,278 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 20:51:26,279 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:51:26,761 INFO L415 sIntCurrentIteration]: We unified 373 AI predicates to 373 [2018-11-07 20:51:26,761 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:51:26,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:51:26,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-07 20:51:26,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:26,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:51:26,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:51:26,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:51:26,764 INFO L87 Difference]: Start difference. First operand 4839 states and 6322 transitions. Second operand 19 states. [2018-11-07 20:52:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:19,127 INFO L93 Difference]: Finished difference Result 9892 states and 13121 transitions. [2018-11-07 20:52:19,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 20:52:19,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 374 [2018-11-07 20:52:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:19,148 INFO L225 Difference]: With dead ends: 9892 [2018-11-07 20:52:19,148 INFO L226 Difference]: Without dead ends: 6001 [2018-11-07 20:52:19,161 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2018-11-07 20:52:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2018-11-07 20:52:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5520. [2018-11-07 20:52:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5520 states. [2018-11-07 20:52:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 7073 transitions. [2018-11-07 20:52:19,290 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 7073 transitions. Word has length 374 [2018-11-07 20:52:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:19,291 INFO L480 AbstractCegarLoop]: Abstraction has 5520 states and 7073 transitions. [2018-11-07 20:52:19,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:52:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 7073 transitions. [2018-11-07 20:52:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-11-07 20:52:19,308 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:19,309 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:19,309 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:19,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:19,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1107811102, now seen corresponding path program 1 times [2018-11-07 20:52:19,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:19,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:19,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:19,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:19,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 218 proven. 37 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 20:52:19,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:52:19,911 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:52:19,911 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 487 with the following transitions: [2018-11-07 20:52:19,911 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [672], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [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 20:52:19,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:52:19,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:52:20,386 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:52:20,387 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:52:20,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:20,395 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:52:20,892 INFO L227 lantSequenceWeakener]: Weakened 114 states. On average, predicates are now at 78.82% of their original sizes. [2018-11-07 20:52:20,893 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:52:23,634 INFO L415 sIntCurrentIteration]: We unified 485 AI predicates to 485 [2018-11-07 20:52:23,634 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:52:23,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:52:23,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-07 20:52:23,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:23,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:52:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:52:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:52:23,636 INFO L87 Difference]: Start difference. First operand 5520 states and 7073 transitions. Second operand 21 states. [2018-11-07 20:52:25,593 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:52:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:43,044 INFO L93 Difference]: Finished difference Result 10408 states and 13677 transitions. [2018-11-07 20:52:43,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:52:43,044 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 486 [2018-11-07 20:52:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:43,067 INFO L225 Difference]: With dead ends: 10408 [2018-11-07 20:52:43,067 INFO L226 Difference]: Without dead ends: 6156 [2018-11-07 20:52:43,080 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 499 GetRequests, 392 SyntacticMatches, 74 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 20:52:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2018-11-07 20:52:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 6151. [2018-11-07 20:52:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6151 states. [2018-11-07 20:52:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 7742 transitions. [2018-11-07 20:52:43,223 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 7742 transitions. Word has length 486 [2018-11-07 20:52:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:43,224 INFO L480 AbstractCegarLoop]: Abstraction has 6151 states and 7742 transitions. [2018-11-07 20:52:43,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:52:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 7742 transitions. [2018-11-07 20:52:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-11-07 20:52:43,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:43,244 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:43,244 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:43,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash 35239762, now seen corresponding path program 1 times [2018-11-07 20:52:43,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:43,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:43,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:43,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:43,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 218 proven. 37 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 20:52:43,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:52:43,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:52:43,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 495 with the following transitions: [2018-11-07 20:52:43,750 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [672], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [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 20:52:43,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:52:43,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:52:46,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:52:46,571 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:52:46,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:46,581 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:52:47,425 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 78.5% of their original sizes. [2018-11-07 20:52:47,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:52:47,861 INFO L415 sIntCurrentIteration]: We unified 493 AI predicates to 493 [2018-11-07 20:52:47,862 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:52:47,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:52:47,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [5] total 27 [2018-11-07 20:52:47,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:47,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 20:52:47,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 20:52:47,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-11-07 20:52:47,864 INFO L87 Difference]: Start difference. First operand 6151 states and 7742 transitions. Second operand 24 states. [2018-11-07 20:52:50,733 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:15,808 INFO L93 Difference]: Finished difference Result 11044 states and 14310 transitions. [2018-11-07 20:53:15,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 20:53:15,808 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 494 [2018-11-07 20:53:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:15,828 INFO L225 Difference]: With dead ends: 11044 [2018-11-07 20:53:15,828 INFO L226 Difference]: Without dead ends: 6792 [2018-11-07 20:53:15,840 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 507 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 20:53:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6792 states. [2018-11-07 20:53:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6792 to 6784. [2018-11-07 20:53:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6784 states. [2018-11-07 20:53:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6784 states to 6784 states and 8417 transitions. [2018-11-07 20:53:15,964 INFO L78 Accepts]: Start accepts. Automaton has 6784 states and 8417 transitions. Word has length 494 [2018-11-07 20:53:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:15,965 INFO L480 AbstractCegarLoop]: Abstraction has 6784 states and 8417 transitions. [2018-11-07 20:53:15,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 20:53:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6784 states and 8417 transitions. [2018-11-07 20:53:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-11-07 20:53:15,986 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:15,986 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:53:15,987 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:15,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:15,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1522366184, now seen corresponding path program 1 times [2018-11-07 20:53:15,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:15,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:15,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:15,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:15,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:16,487 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 20:53:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 60 proven. 237 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:53:18,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:18,253 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:18,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 511 with the following transitions: [2018-11-07 20:53:18,253 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [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], [837], [841], [845], [849], [853], [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], [1288], [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 20:53:18,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:18,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:18,547 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:19,355 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:19,355 INFO L272 AbstractInterpreter]: Visited 248 different actions 1475 times. Merged at 7 different actions 42 times. Widened at 1 different actions 2 times. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:53:19,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:19,360 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:19,904 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 78.03% of their original sizes. [2018-11-07 20:53:19,904 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:20,385 INFO L415 sIntCurrentIteration]: We unified 509 AI predicates to 509 [2018-11-07 20:53:20,386 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:20,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:20,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-11-07 20:53:20,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:20,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:53:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:53:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:53:20,388 INFO L87 Difference]: Start difference. First operand 6784 states and 8417 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 20:53:21,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:53:21,078 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:53:21,083 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:53:21,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:53:21 BoogieIcfgContainer [2018-11-07 20:53:21,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:53:21,084 INFO L168 Benchmark]: Toolchain (without parser) took 220275.84 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 4.3 GB. Max. memory is 7.1 GB. [2018-11-07 20:53:21,085 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 20:53:21,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1128.32 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 20:53:21,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:53:21,087 INFO L168 Benchmark]: Boogie Preprocessor took 165.80 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:53:21,088 INFO L168 Benchmark]: RCFGBuilder took 6640.57 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: 271.6 MB). Peak memory consumption was 271.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:53:21,089 INFO L168 Benchmark]: TraceAbstraction took 212131.89 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -680.9 MB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. [2018-11-07 20:53:21,093 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 1128.32 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 204.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.80 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6640.57 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: 271.6 MB). Peak memory consumption was 271.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212131.89 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -680.9 MB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (6784states) and FLOYD_HOARE automaton (currently 6 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.0s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 185.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2434 SDtfs, 22381 SDslu, 1930 SDs, 0 SdLazy, 32149 SolverSat, 3257 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.3s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2534 GetRequests, 2224 SyntacticMatches, 130 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6784occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.8s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.997826603360201 AbsIntWeakeningRatio, 0.07371007371007371 AbsIntAvgWeakeningVarsNumRemoved, 11.558968058968059 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 810 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 2918 NumberOfCodeBlocks, 2918 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2908 ConstructedInterpolants, 0 QuantifiedInterpolants, 6288205 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 1543/2075 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown