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_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:41:20,999 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:41:21,002 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:41:21,018 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:41:21,019 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:41:21,020 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:41:21,021 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:41:21,023 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:41:21,025 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:41:21,026 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:41:21,027 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:41:21,027 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:41:21,028 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:41:21,029 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:41:21,030 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:41:21,031 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:41:21,032 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:41:21,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:41:21,041 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:41:21,043 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:41:21,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:41:21,047 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:41:21,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:41:21,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:41:21,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:41:21,055 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:41:21,056 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:41:21,060 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:41:21,061 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:41:21,062 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:41:21,062 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:41:21,063 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:41:21,063 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:41:21,064 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:41:21,066 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:41:21,067 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:41:21,067 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:41:21,092 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:41:21,092 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:41:21,094 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:41:21,094 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:41:21,095 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:41:21,096 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:41:21,096 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:41:21,096 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:41:21,096 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:41:21,096 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:41:21,097 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:41:21,097 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:41:21,097 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:41:21,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:41:21,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:41:21,099 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:41:21,099 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:41:21,101 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:41:21,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:41:21,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:41:21,101 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:41:21,101 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:41:21,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:41:21,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:41:21,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:41:21,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:41:21,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:41:21,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:41:21,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:41:21,103 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:41:21,104 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:41:21,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:41:21,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:41:21,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:41:21,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:41:21,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:41:21,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:41:21,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:41:21,210 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:41:21,211 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:41:21,212 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-12 16:41:21,278 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f924e275b/b8454fcc9902421da90d2abcf3b0c673/FLAG400a9d193 [2018-11-12 16:41:21,903 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:41:21,903 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-12 16:41:21,925 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f924e275b/b8454fcc9902421da90d2abcf3b0c673/FLAG400a9d193 [2018-11-12 16:41:21,945 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f924e275b/b8454fcc9902421da90d2abcf3b0c673 [2018-11-12 16:41:21,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:41:21,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:41:21,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:41:21,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:41:21,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:41:21,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:41:21" (1/1) ... [2018-11-12 16:41:21,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425d5bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:21, skipping insertion in model container [2018-11-12 16:41:21,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:41:21" (1/1) ... [2018-11-12 16:41:21,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:41:22,071 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:41:22,854 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:41:22,859 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:41:23,144 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:41:23,168 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:41:23,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23 WrapperNode [2018-11-12 16:41:23,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:41:23,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:41:23,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:41:23,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:41:23,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:41:23,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:41:23,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:41:23,352 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:41:23,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... [2018-11-12 16:41:23,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:41:23,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:41:23,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:41:23,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:41:23,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:41:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:41:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:41:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:41:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:41:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:41:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:41:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:41:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:41:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:41:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:41:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:41:28,911 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:41:28,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:41:28 BoogieIcfgContainer [2018-11-12 16:41:28,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:41:28,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:41:28,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:41:28,917 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:41:28,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:41:21" (1/3) ... [2018-11-12 16:41:28,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ee1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:41:28, skipping insertion in model container [2018-11-12 16:41:28,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:23" (2/3) ... [2018-11-12 16:41:28,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ee1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:41:28, skipping insertion in model container [2018-11-12 16:41:28,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:41:28" (3/3) ... [2018-11-12 16:41:28,921 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label18_false-unreach-call.c [2018-11-12 16:41:28,931 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:41:28,940 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:41:28,956 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:41:28,997 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:41:28,997 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:41:28,997 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:41:28,998 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:41:28,998 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:41:28,998 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:41:28,998 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:41:28,998 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:41:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:41:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 16:41:29,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:29,046 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:29,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:29,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1130259964, now seen corresponding path program 1 times [2018-11-12 16:41:29,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:29,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:29,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:29,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:29,109 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:29,467 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:41:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:29,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:29,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:41:29,563 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:29,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:41:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:41:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:41:29,586 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:41:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:32,714 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:41:32,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:41:32,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-12 16:41:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:32,741 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:41:32,741 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:41:32,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:41:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:41:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:41:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:41:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-12 16:41:32,870 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 14 [2018-11-12 16:41:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:32,871 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-12 16:41:32,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:41:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-12 16:41:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-12 16:41:32,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:32,879 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:32,879 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:32,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:32,880 INFO L82 PathProgramCache]: Analyzing trace with hash -3982677, now seen corresponding path program 1 times [2018-11-12 16:41:32,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:32,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:32,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:32,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:32,883 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:33,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:33,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:33,179 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:33,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:33,183 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-11-12 16:41:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:38,858 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-11-12 16:41:38,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:38,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-12 16:41:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:38,872 INFO L225 Difference]: With dead ends: 2191 [2018-11-12 16:41:38,872 INFO L226 Difference]: Without dead ends: 1453 [2018-11-12 16:41:38,876 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 [2018-11-12 16:41:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-11-12 16:41:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-11-12 16:41:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-12 16:41:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-11-12 16:41:38,940 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 85 [2018-11-12 16:41:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:38,941 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-11-12 16:41:38,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-11-12 16:41:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-12 16:41:38,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:38,945 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:41:38,945 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:38,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash 461895267, now seen corresponding path program 1 times [2018-11-12 16:41:38,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:38,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:38,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:38,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:38,947 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:39,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:39,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:39,216 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:39,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:39,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:39,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:39,217 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-11-12 16:41:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:43,766 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-11-12 16:41:43,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:43,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-11-12 16:41:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:43,788 INFO L225 Difference]: With dead ends: 3925 [2018-11-12 16:41:43,788 INFO L226 Difference]: Without dead ends: 2495 [2018-11-12 16:41:43,798 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 [2018-11-12 16:41:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-11-12 16:41:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-11-12 16:41:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-11-12 16:41:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-11-12 16:41:43,894 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 89 [2018-11-12 16:41:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:43,894 INFO L480 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-11-12 16:41:43,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-11-12 16:41:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-12 16:41:43,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:43,899 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:41:43,899 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:43,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash -179153430, now seen corresponding path program 1 times [2018-11-12 16:41:43,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:43,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:43,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:43,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:43,905 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:44,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:44,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:44,176 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:44,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:44,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:44,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:44,178 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-11-12 16:41:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:48,424 INFO L93 Difference]: Finished difference Result 6972 states and 11519 transitions. [2018-11-12 16:41:48,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:48,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-12 16:41:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:48,455 INFO L225 Difference]: With dead ends: 6972 [2018-11-12 16:41:48,456 INFO L226 Difference]: Without dead ends: 4512 [2018-11-12 16:41:48,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:41:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2018-11-12 16:41:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4480. [2018-11-12 16:41:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2018-11-12 16:41:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6527 transitions. [2018-11-12 16:41:48,612 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6527 transitions. Word has length 120 [2018-11-12 16:41:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:48,612 INFO L480 AbstractCegarLoop]: Abstraction has 4480 states and 6527 transitions. [2018-11-12 16:41:48,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6527 transitions. [2018-11-12 16:41:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-12 16:41:48,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:48,617 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:48,617 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:48,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1769086126, now seen corresponding path program 1 times [2018-11-12 16:41:48,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:48,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:48,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:48,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:48,619 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:49,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:49,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:49,237 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:49,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:49,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:49,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:49,242 INFO L87 Difference]: Start difference. First operand 4480 states and 6527 transitions. Second operand 6 states. [2018-11-12 16:41:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:55,054 INFO L93 Difference]: Finished difference Result 16709 states and 25873 transitions. [2018-11-12 16:41:55,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:55,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-12 16:41:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:55,128 INFO L225 Difference]: With dead ends: 16709 [2018-11-12 16:41:55,128 INFO L226 Difference]: Without dead ends: 12235 [2018-11-12 16:41:55,176 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:41:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2018-11-12 16:41:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12228. [2018-11-12 16:41:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12228 states. [2018-11-12 16:41:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12228 states to 12228 states and 17609 transitions. [2018-11-12 16:41:55,523 INFO L78 Accepts]: Start accepts. Automaton has 12228 states and 17609 transitions. Word has length 164 [2018-11-12 16:41:55,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:55,524 INFO L480 AbstractCegarLoop]: Abstraction has 12228 states and 17609 transitions. [2018-11-12 16:41:55,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 12228 states and 17609 transitions. [2018-11-12 16:41:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-12 16:41:55,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:55,540 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:55,540 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:55,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1438063964, now seen corresponding path program 1 times [2018-11-12 16:41:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:55,542 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:55,798 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:41:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:41:55,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:55,859 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:55,860 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-12 16:41:55,862 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [680], [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], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:55,915 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:55,915 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:56,875 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:41:56,879 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Performed 2802 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2802 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:41:56,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:56,928 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:41:57,847 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.3% of their original sizes. [2018-11-12 16:41:57,848 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:41:58,931 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-12 16:41:58,932 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:41:58,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:41:58,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-12 16:41:58,933 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:58,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:41:58,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:41:58,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:41:58,934 INFO L87 Difference]: Start difference. First operand 12228 states and 17609 transitions. Second operand 11 states. [2018-11-12 16:42:04,689 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:29,020 INFO L93 Difference]: Finished difference Result 24793 states and 35700 transitions. [2018-11-12 16:42:29,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:42:29,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2018-11-12 16:42:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:29,084 INFO L225 Difference]: With dead ends: 24793 [2018-11-12 16:42:29,084 INFO L226 Difference]: Without dead ends: 12571 [2018-11-12 16:42:29,144 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 190 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:42:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12571 states. [2018-11-12 16:42:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12571 to 12566. [2018-11-12 16:42:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12566 states. [2018-11-12 16:42:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12566 states to 12566 states and 17957 transitions. [2018-11-12 16:42:29,495 INFO L78 Accepts]: Start accepts. Automaton has 12566 states and 17957 transitions. Word has length 236 [2018-11-12 16:42:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:29,496 INFO L480 AbstractCegarLoop]: Abstraction has 12566 states and 17957 transitions. [2018-11-12 16:42:29,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:42:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12566 states and 17957 transitions. [2018-11-12 16:42:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-12 16:42:29,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:29,507 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:29,507 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:29,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1495994740, now seen corresponding path program 1 times [2018-11-12 16:42:29,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:29,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:29,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:29,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:29,509 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:29,848 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:42:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:42:30,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:30,356 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:30,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-12 16:42:30,357 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [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], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:30,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:30,367 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:30,443 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:31,072 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:31,072 INFO L272 AbstractInterpreter]: Visited 158 different actions 461 times. Merged at 5 different actions 9 times. Never widened. Performed 6572 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6572 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:42:31,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:31,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:31,701 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 16:42:31,702 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:32,994 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-12 16:42:32,995 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:32,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:32,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:42:32,995 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:32,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:42:32,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:42:32,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:42:32,998 INFO L87 Difference]: Start difference. First operand 12566 states and 17957 transitions. Second operand 23 states. [2018-11-12 16:43:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:30,469 INFO L93 Difference]: Finished difference Result 28932 states and 41724 transitions. [2018-11-12 16:43:30,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:43:30,470 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 256 [2018-11-12 16:43:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:30,556 INFO L225 Difference]: With dead ends: 28932 [2018-11-12 16:43:30,557 INFO L226 Difference]: Without dead ends: 16710 [2018-11-12 16:43:30,643 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 275 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:43:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2018-11-12 16:43:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 16307. [2018-11-12 16:43:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16307 states. [2018-11-12 16:43:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16307 states to 16307 states and 21907 transitions. [2018-11-12 16:43:31,064 INFO L78 Accepts]: Start accepts. Automaton has 16307 states and 21907 transitions. Word has length 256 [2018-11-12 16:43:31,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:31,068 INFO L480 AbstractCegarLoop]: Abstraction has 16307 states and 21907 transitions. [2018-11-12 16:43:31,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:43:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 16307 states and 21907 transitions. [2018-11-12 16:43:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-12 16:43:31,082 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:31,083 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:43:31,083 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:31,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:31,084 INFO L82 PathProgramCache]: Analyzing trace with hash -729541643, now seen corresponding path program 1 times [2018-11-12 16:43:31,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:31,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:31,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:31,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:31,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:31,895 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:43:32,352 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:43:33,351 WARN L179 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-12 16:43:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:33,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:33,832 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:33,832 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-12 16:43:33,833 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [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], [992], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:33,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:33,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:34,008 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:42,799 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:42,799 INFO L272 AbstractInterpreter]: Visited 161 different actions 470 times. Merged at 5 different actions 9 times. Never widened. Performed 7996 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7996 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:43:42,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:42,805 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:43,229 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 16:43:43,229 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:43,717 INFO L415 sIntCurrentIteration]: We unified 316 AI predicates to 316 [2018-11-12 16:43:43,717 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:43,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:43,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [13] total 35 [2018-11-12 16:43:43,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:43,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 16:43:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 16:43:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:43:43,720 INFO L87 Difference]: Start difference. First operand 16307 states and 21907 transitions. Second operand 24 states. [2018-11-12 16:44:30,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:30,306 INFO L93 Difference]: Finished difference Result 35921 states and 49422 transitions. [2018-11-12 16:44:30,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:44:30,306 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 317 [2018-11-12 16:44:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:30,412 INFO L225 Difference]: With dead ends: 35921 [2018-11-12 16:44:30,412 INFO L226 Difference]: Without dead ends: 20825 [2018-11-12 16:44:30,466 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:44:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2018-11-12 16:44:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 20110. [2018-11-12 16:44:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20110 states. [2018-11-12 16:44:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 26152 transitions. [2018-11-12 16:44:30,879 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 26152 transitions. Word has length 317 [2018-11-12 16:44:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:30,880 INFO L480 AbstractCegarLoop]: Abstraction has 20110 states and 26152 transitions. [2018-11-12 16:44:30,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 16:44:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 26152 transitions. [2018-11-12 16:44:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-12 16:44:30,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:30,906 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:44:30,906 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:30,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1770680950, now seen corresponding path program 1 times [2018-11-12 16:44:30,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:30,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:30,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:30,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:30,908 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:31,206 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:44:31,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:31,524 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:31,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-11-12 16:44:31,524 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [680], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:31,528 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:31,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:31,654 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:31,982 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:31,982 INFO L272 AbstractInterpreter]: Visited 159 different actions 464 times. Merged at 5 different actions 9 times. Never widened. Performed 8673 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8673 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:44:31,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:31,995 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:33,135 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-12 16:44:33,135 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:33,862 INFO L415 sIntCurrentIteration]: We unified 363 AI predicates to 363 [2018-11-12 16:44:33,862 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:33,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:33,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [5] total 30 [2018-11-12 16:44:33,862 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:33,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-12 16:44:33,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-12 16:44:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-11-12 16:44:33,864 INFO L87 Difference]: Start difference. First operand 20110 states and 26152 transitions. Second operand 27 states. Received shutdown request... [2018-11-12 16:44:58,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:44:58,325 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:44:58,330 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:44:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:44:58 BoogieIcfgContainer [2018-11-12 16:44:58,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:44:58,331 INFO L168 Benchmark]: Toolchain (without parser) took 216373.53 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -270.0 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-11-12 16:44:58,332 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:44:58,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1209.95 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. [2018-11-12 16:44:58,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:44:58,334 INFO L168 Benchmark]: Boogie Preprocessor took 151.52 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. [2018-11-12 16:44:58,335 INFO L168 Benchmark]: RCFGBuilder took 5409.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.4 MB). Peak memory consumption was 265.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:44:58,335 INFO L168 Benchmark]: TraceAbstraction took 209417.24 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 264.1 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:44:58,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1209.95 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 179.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.52 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 5409.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.4 MB). Peak memory consumption was 265.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209417.24 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 264.1 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (20110states) and FLOYD_HOARE automaton (currently 33 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (3650 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 182.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1813 SDtfs, 24256 SDslu, 2218 SDs, 0 SdLazy, 32129 SolverSat, 4745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.0s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1277 GetRequests, 1057 SyntacticMatches, 51 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20110occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.2s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9974121934400142 AbsIntWeakeningRatio, 0.09409751924721985 AbsIntAvgWeakeningVarsNumRemoved, 6.808383233532934 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1208 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 1645 NumberOfCodeBlocks, 1645 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1636 ConstructedInterpolants, 0 QuantifiedInterpolants, 2343456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 394/677 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown