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/Problem17_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:49:38,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:49:38,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:49:38,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:49:38,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:49:38,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:49:38,159 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:49:38,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:49:38,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:49:38,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:49:38,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:49:38,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:49:38,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:49:38,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:49:38,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:49:38,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:49:38,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:49:38,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:49:38,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:49:38,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:49:38,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:49:38,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:49:38,181 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:49:38,181 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:49:38,182 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:49:38,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:49:38,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:49:38,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:49:38,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:49:38,187 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:49:38,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:49:38,188 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:49:38,188 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:49:38,189 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:49:38,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:49:38,190 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:49:38,191 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 [2018-10-24 18:49:38,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:49:38,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:49:38,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:49:38,208 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:49:38,209 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:49:38,209 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:49:38,209 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:49:38,209 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:49:38,209 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:49:38,210 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:49:38,210 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:49:38,211 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:49:38,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:49:38,211 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:49:38,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:49:38,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:49:38,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:49:38,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:49:38,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:49:38,213 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:49:38,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:49:38,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:49:38,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:49:38,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:49:38,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:49:38,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:49:38,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:49:38,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:49:38,216 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:49:38,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:49:38,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:49:38,217 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:49:38,217 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:49:38,218 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:49:38,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:49:38,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:49:38,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:49:38,305 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:49:38,305 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:49:38,307 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09_false-unreach-call.c [2018-10-24 18:49:38,375 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d25204310/f9bded5170e44d5e937b8f9ce69af5ff/FLAGb6f24edad [2018-10-24 18:49:39,098 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:49:39,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label09_false-unreach-call.c [2018-10-24 18:49:39,126 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d25204310/f9bded5170e44d5e937b8f9ce69af5ff/FLAGb6f24edad [2018-10-24 18:49:39,150 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d25204310/f9bded5170e44d5e937b8f9ce69af5ff [2018-10-24 18:49:39,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:49:39,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:49:39,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:49:39,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:49:39,174 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:49:39,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:49:39" (1/1) ... [2018-10-24 18:49:39,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e39dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:39, skipping insertion in model container [2018-10-24 18:49:39,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:49:39" (1/1) ... [2018-10-24 18:49:39,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:49:39,301 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:49:40,343 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:49:40,348 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:49:40,736 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:49:40,763 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:49:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40 WrapperNode [2018-10-24 18:49:40,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:49:40,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:49:40,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:49:40,765 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:49:40,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:40,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:49:41,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:49:41,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:49:41,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:49:41,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (1/1) ... [2018-10-24 18:49:41,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:49:41,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:49:41,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:49:41,546 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:49:41,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (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 [2018-10-24 18:49:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:49:41,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:49:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:49:41,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:49:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:49:41,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:49:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:49:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:49:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:49:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:49:53,771 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:49:53,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:49:53 BoogieIcfgContainer [2018-10-24 18:49:53,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:49:53,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:49:53,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:49:53,783 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:49:53,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:49:39" (1/3) ... [2018-10-24 18:49:53,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453a56ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:49:53, skipping insertion in model container [2018-10-24 18:49:53,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:40" (2/3) ... [2018-10-24 18:49:53,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453a56ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:49:53, skipping insertion in model container [2018-10-24 18:49:53,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:49:53" (3/3) ... [2018-10-24 18:49:53,787 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label09_false-unreach-call.c [2018-10-24 18:49:53,799 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:49:53,809 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:49:53,827 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:49:53,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:49:53,880 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:49:53,880 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:49:53,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:49:53,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:49:53,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:49:53,881 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:49:53,881 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:49:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 18:49:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 18:49:53,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:49:53,921 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:49:53,924 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:49:53,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:49:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash 643267750, now seen corresponding path program 1 times [2018-10-24 18:49:53,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:49:53,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:49:53,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:49:53,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:49:53,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:49:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:49:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:49:54,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:49:54,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:49:54,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:49:54,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:49:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:49:54,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:49:54,400 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 18:50:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:07,990 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 18:50:07,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:50:07,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-10-24 18:50:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:08,042 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 18:50:08,042 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 18:50:08,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 18:50:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 18:50:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 18:50:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 18:50:08,185 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 19 [2018-10-24 18:50:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:08,186 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 18:50:08,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:50:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 18:50:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 18:50:08,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:08,193 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:50:08,193 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:08,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:08,193 INFO L82 PathProgramCache]: Analyzing trace with hash -969437153, now seen corresponding path program 1 times [2018-10-24 18:50:08,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:08,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:08,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:08,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:08,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:08,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:08,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:50:08,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:08,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:50:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:50:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:50:08,515 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 18:50:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:18,804 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 18:50:18,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:50:18,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 18:50:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:18,823 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 18:50:18,823 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 18:50:18,829 INFO L605 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 [2018-10-24 18:50:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 18:50:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 18:50:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 18:50:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 18:50:18,921 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 95 [2018-10-24 18:50:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:18,921 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 18:50:18,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:50:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 18:50:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 18:50:18,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:18,927 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:50:18,928 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:18,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash 595162535, now seen corresponding path program 1 times [2018-10-24 18:50:18,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:18,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:18,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:19,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:19,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:50:19,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:19,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:50:19,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:50:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:50:19,201 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 18:50:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:27,096 INFO L93 Difference]: Finished difference Result 5319 states and 8743 transitions. [2018-10-24 18:50:27,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:50:27,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-24 18:50:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:27,130 INFO L225 Difference]: With dead ends: 5319 [2018-10-24 18:50:27,130 INFO L226 Difference]: Without dead ends: 3350 [2018-10-24 18:50:27,139 INFO L605 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 [2018-10-24 18:50:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2018-10-24 18:50:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3319. [2018-10-24 18:50:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3319 states. [2018-10-24 18:50:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4833 transitions. [2018-10-24 18:50:27,233 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4833 transitions. Word has length 99 [2018-10-24 18:50:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:27,234 INFO L481 AbstractCegarLoop]: Abstraction has 3319 states and 4833 transitions. [2018-10-24 18:50:27,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:50:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4833 transitions. [2018-10-24 18:50:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 18:50:27,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:27,237 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:27,238 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:27,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1684716310, now seen corresponding path program 1 times [2018-10-24 18:50:27,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:27,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:27,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:27,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:27,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:50:27,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:27,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:50:27,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:50:27,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:27,472 INFO L87 Difference]: Start difference. First operand 3319 states and 4833 transitions. Second operand 4 states. [2018-10-24 18:50:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:36,919 INFO L93 Difference]: Finished difference Result 6632 states and 9680 transitions. [2018-10-24 18:50:36,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:50:36,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-24 18:50:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:36,937 INFO L225 Difference]: With dead ends: 6632 [2018-10-24 18:50:36,937 INFO L226 Difference]: Without dead ends: 3319 [2018-10-24 18:50:36,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-10-24 18:50:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3319. [2018-10-24 18:50:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3319 states. [2018-10-24 18:50:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4373 transitions. [2018-10-24 18:50:37,027 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4373 transitions. Word has length 129 [2018-10-24 18:50:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:37,028 INFO L481 AbstractCegarLoop]: Abstraction has 3319 states and 4373 transitions. [2018-10-24 18:50:37,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:50:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4373 transitions. [2018-10-24 18:50:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 18:50:37,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:37,031 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:37,032 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:37,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -946229712, now seen corresponding path program 1 times [2018-10-24 18:50:37,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:37,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:37,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:37,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:37,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:50:37,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:37,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:50:37,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:37,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:50:37,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:50:37,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:50:37,191 INFO L87 Difference]: Start difference. First operand 3319 states and 4373 transitions. Second operand 3 states. [2018-10-24 18:50:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:44,259 INFO L93 Difference]: Finished difference Result 9277 states and 12357 transitions. [2018-10-24 18:50:44,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:50:44,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-24 18:50:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:44,293 INFO L225 Difference]: With dead ends: 9277 [2018-10-24 18:50:44,294 INFO L226 Difference]: Without dead ends: 5964 [2018-10-24 18:50:44,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:50:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2018-10-24 18:50:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5964. [2018-10-24 18:50:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5964 states. [2018-10-24 18:50:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 7328 transitions. [2018-10-24 18:50:44,453 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 7328 transitions. Word has length 183 [2018-10-24 18:50:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:44,454 INFO L481 AbstractCegarLoop]: Abstraction has 5964 states and 7328 transitions. [2018-10-24 18:50:44,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:50:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 7328 transitions. [2018-10-24 18:50:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 18:50:44,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:44,458 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:44,458 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:44,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2123800399, now seen corresponding path program 1 times [2018-10-24 18:50:44,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:44,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:44,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:44,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:44,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:45,133 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 18:50:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:50:45,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:50:45,538 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:50:45,539 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-24 18:50:45,542 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [762], [764], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:50:45,644 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:50:45,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:50:48,266 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:50:48,763 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:50:48,765 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:50:48,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:48,778 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:50:50,864 INFO L232 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 75.06% of their original sizes. [2018-10-24 18:50:50,865 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:50:51,479 INFO L413 sIntCurrentIteration]: We have 205 unified AI predicates [2018-10-24 18:50:51,480 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:50:51,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:50:51,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 18:50:51,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:51,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:50:51,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:50:51,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:50:51,482 INFO L87 Difference]: Start difference. First operand 5964 states and 7328 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 18:53:34,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:53:34,521 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:53:34,527 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:53:34,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:53:34 BoogieIcfgContainer [2018-10-24 18:53:34,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:53:34,528 INFO L168 Benchmark]: Toolchain (without parser) took 235364.46 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 86.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,529 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 18:53:34,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1598.17 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 488.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,532 INFO L168 Benchmark]: Boogie Preprocessor took 290.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,533 INFO L168 Benchmark]: RCFGBuilder took 12231.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,534 INFO L168 Benchmark]: TraceAbstraction took 220750.26 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 367.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:53:34,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1598.17 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 488.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 290.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12231.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.1 MB). Peak memory consumption was 470.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220750.26 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 367.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 44). Cancelled while BasicCegarLoop was constructing difference of abstraction (5964states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (10504 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 220.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 211.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2688 SDtfs, 7534 SDslu, 1597 SDs, 0 SdLazy, 12900 SolverSat, 3276 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 170.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5964occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952720450281425 AbsIntWeakeningRatio, 0.13170731707317074 AbsIntAvgWeakeningVarsNumRemoved, 1038.5756097560975 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 541 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 731 NumberOfCodeBlocks, 731 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 725 ConstructedInterpolants, 0 QuantifiedInterpolants, 572632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 165/237 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown