java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:55:36,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:55:36,981 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:55:36,996 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:55:36,997 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:55:36,998 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:55:37,000 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:55:37,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:55:37,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:55:37,013 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:55:37,014 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:55:37,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:55:37,016 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:55:37,020 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:55:37,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:55:37,021 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:55:37,022 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:55:37,027 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:55:37,029 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:55:37,031 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:55:37,032 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:55:37,033 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:55:37,035 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:55:37,035 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:55:37,035 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:55:37,036 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:55:37,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:55:37,038 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:55:37,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:55:37,040 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:55:37,040 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:55:37,040 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:55:37,041 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:55:37,041 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:55:37,042 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:55:37,042 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:55:37,043 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:55:37,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:55:37,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:55:37,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:55:37,060 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:55:37,061 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:55:37,061 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:55:37,061 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:55:37,061 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:55:37,062 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:55:37,064 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:55:37,064 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:55:37,064 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:55:37,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:55:37,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:55:37,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:55:37,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:55:37,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:55:37,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:55:37,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:55:37,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:55:37,068 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:55:37,068 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:55:37,068 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:55:37,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:55:37,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:55:37,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:55:37,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:55:37,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:55:37,070 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:55:37,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:55:37,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:55:37,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:55:37,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:55:37,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:55:37,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:55:37,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:55:37,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:55:37,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:55:37,147 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:55:37,147 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-27 02:55:37,208 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa147071d/a84e192ba2964ec59eb4cf27db38f192/FLAGb4ded0497 [2018-10-27 02:55:37,979 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:55:37,980 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-27 02:55:38,019 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa147071d/a84e192ba2964ec59eb4cf27db38f192/FLAGb4ded0497 [2018-10-27 02:55:38,037 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa147071d/a84e192ba2964ec59eb4cf27db38f192 [2018-10-27 02:55:38,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:55:38,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:55:38,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:55:38,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:55:38,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:55:38,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:55:38" (1/1) ... [2018-10-27 02:55:38,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:38, skipping insertion in model container [2018-10-27 02:55:38,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:55:38" (1/1) ... [2018-10-27 02:55:38,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:55:38,245 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:55:39,666 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:55:39,670 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:55:40,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:55:40,511 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:55:40,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40 WrapperNode [2018-10-27 02:55:40,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:55:40,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:55:40,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:55:40,514 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:55:40,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:40,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:55:41,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:55:41,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:55:41,089 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:55:41,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... [2018-10-27 02:55:41,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:55:41,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:55:41,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:55:41,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:55:41,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 02:55:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:55:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:55:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:55:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:55:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:55:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:55:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:55:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:55:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:55:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:55:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:55:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:55:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:55:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:55:53,006 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:55:53,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:53 BoogieIcfgContainer [2018-10-27 02:55:53,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:55:53,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:55:53,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:55:53,011 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:55:53,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:55:38" (1/3) ... [2018-10-27 02:55:53,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9f95c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:53, skipping insertion in model container [2018-10-27 02:55:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:40" (2/3) ... [2018-10-27 02:55:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9f95c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:53, skipping insertion in model container [2018-10-27 02:55:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:53" (3/3) ... [2018-10-27 02:55:53,015 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-10-27 02:55:53,025 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:55:53,035 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:55:53,052 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:55:53,100 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:55:53,100 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:55:53,100 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:55:53,100 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:55:53,100 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:55:53,101 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:55:53,101 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:55:53,101 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:55:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:55:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-27 02:55:53,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:55:53,167 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] [2018-10-27 02:55:53,169 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:55:53,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1221067980, now seen corresponding path program 1 times [2018-10-27 02:55:53,178 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:55:53,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:53,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:55:53,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:53,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:55:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:55:53,691 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:55:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:55:53,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:55:53,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:55:53,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:55:53,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:55:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:55:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:55:53,735 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 02:56:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:09,386 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-27 02:56:09,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:56:09,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-27 02:56:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:09,432 INFO L225 Difference]: With dead ends: 3968 [2018-10-27 02:56:09,432 INFO L226 Difference]: Without dead ends: 2842 [2018-10-27 02:56:09,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-27 02:56:09,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-27 02:56:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-27 02:56:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-27 02:56:09,621 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 42 [2018-10-27 02:56:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:09,622 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-27 02:56:09,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:56:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-27 02:56:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-27 02:56:09,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:09,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:09,633 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:09,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash 894022032, now seen corresponding path program 1 times [2018-10-27 02:56:09,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:09,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:09,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:09,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:09,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:09,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:56:09,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:56:09,990 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:09,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:56:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:56:09,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:56:09,992 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-27 02:56:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:27,582 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-27 02:56:27,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:56:27,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-27 02:56:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:27,609 INFO L225 Difference]: With dead ends: 5673 [2018-10-27 02:56:27,610 INFO L226 Difference]: Without dead ends: 3698 [2018-10-27 02:56:27,618 INFO L605 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 [2018-10-27 02:56:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-27 02:56:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-27 02:56:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-27 02:56:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-10-27 02:56:27,733 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 112 [2018-10-27 02:56:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:27,733 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-10-27 02:56:27,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:56:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-10-27 02:56:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 02:56:27,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:27,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:27,743 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:27,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash -463864276, now seen corresponding path program 1 times [2018-10-27 02:56:27,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:27,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:27,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:27,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:27,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:28,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:56:28,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:56:28,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:28,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:56:28,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:56:28,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:56:28,007 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-10-27 02:56:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:46,367 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-10-27 02:56:46,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:56:46,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-27 02:56:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:46,414 INFO L225 Difference]: With dead ends: 10963 [2018-10-27 02:56:46,414 INFO L226 Difference]: Without dead ends: 7282 [2018-10-27 02:56:46,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:56:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-27 02:56:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-27 02:56:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-27 02:56:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-10-27 02:56:46,667 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 114 [2018-10-27 02:56:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:46,667 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-10-27 02:56:46,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:56:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-10-27 02:56:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 02:56:46,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:46,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:56:46,678 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:46,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1460284852, now seen corresponding path program 1 times [2018-10-27 02:56:46,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:46,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:46,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:46,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:46,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:56:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:56:46,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:56:46,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:56:46,950 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:56:46,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:56:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:56:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:46,952 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-10-27 02:56:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:56:59,162 INFO L93 Difference]: Finished difference Result 27677 states and 43232 transitions. [2018-10-27 02:56:59,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:56:59,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-10-27 02:56:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:56:59,253 INFO L225 Difference]: With dead ends: 27677 [2018-10-27 02:56:59,253 INFO L226 Difference]: Without dead ends: 20508 [2018-10-27 02:56:59,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:56:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-10-27 02:56:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-10-27 02:56:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-10-27 02:56:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29111 transitions. [2018-10-27 02:56:59,812 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29111 transitions. Word has length 158 [2018-10-27 02:56:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:56:59,812 INFO L481 AbstractCegarLoop]: Abstraction has 20471 states and 29111 transitions. [2018-10-27 02:56:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:56:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29111 transitions. [2018-10-27 02:56:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-27 02:56:59,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:56:59,828 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:56:59,829 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:56:59,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:56:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1058546082, now seen corresponding path program 1 times [2018-10-27 02:56:59,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:56:59,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:59,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:56:59,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:56:59,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:56:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:57:00,222 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:57:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:57:00,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:57:00,587 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:57:00,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-27 02:57:00,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2863], [2865], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 02:57:00,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:57:00,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:57:07,266 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:57:07,267 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:57:07,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:57:07,280 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:57:11,977 INFO L227 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 71.43% of their original sizes. [2018-10-27 02:57:11,977 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:57:13,614 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-10-27 02:57:13,614 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:57:13,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:57:13,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 02:57:13,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:57:13,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 02:57:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 02:57:13,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 02:57:13,617 INFO L87 Difference]: Start difference. First operand 20471 states and 29111 transitions. Second operand 11 states. [2018-10-27 02:58:08,607 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 02:59:21,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 02:59:21,749 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:59:21,755 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:59:21,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:59:21 BoogieIcfgContainer [2018-10-27 02:59:21,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:59:21,756 INFO L168 Benchmark]: Toolchain (without parser) took 223706.74 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 958.6 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,760 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-27 02:59:21,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2460.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 574.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,763 INFO L168 Benchmark]: Boogie Preprocessor took 281.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,764 INFO L168 Benchmark]: RCFGBuilder took 11636.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 20.5 MB). Peak memory consumption was 665.2 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,765 INFO L168 Benchmark]: TraceAbstraction took 208747.77 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -971.6 MB). Peak memory consumption was 735.0 MB. Max. memory is 7.1 GB. [2018-10-27 02:59:21,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 2460.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 574.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 281.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11636.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 20.5 MB). Peak memory consumption was 665.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208747.77 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -971.6 MB). Peak memory consumption was 735.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (20471states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5226 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 192.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2151 SDtfs, 11750 SDslu, 1968 SDs, 0 SdLazy, 19798 SolverSat, 5577 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 143.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 305 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20471occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9965837104072395 AbsIntWeakeningRatio, 0.11029411764705882 AbsIntAvgWeakeningVarsNumRemoved, 30.80514705882353 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 379825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 283/285 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown