java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:32:55,242 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:32:55,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:32:55,256 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:32:55,257 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:32:55,258 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:32:55,259 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:32:55,261 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:32:55,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:32:55,264 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:32:55,265 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:32:55,265 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:32:55,266 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:32:55,267 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:32:55,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:32:55,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:32:55,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:32:55,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:32:55,279 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:32:55,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:32:55,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:32:55,289 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:32:55,294 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:32:55,294 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:32:55,294 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:32:55,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:32:55,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:32:55,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:32:55,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:32:55,305 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:32:55,306 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:32:55,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:32:55,306 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:32:55,307 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:32:55,308 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:32:55,309 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:32:55,309 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:32:55,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:32:55,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:32:55,339 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:32:55,340 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:32:55,340 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:32:55,340 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:32:55,340 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:32:55,340 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:32:55,341 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:32:55,342 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:32:55,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:32:55,343 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:32:55,343 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:32:55,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:32:55,343 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:32:55,343 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:32:55,344 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:32:55,344 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:32:55,344 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:32:55,344 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:32:55,344 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:32:55,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:32:55,345 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:32:55,345 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:32:55,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:32:55,345 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:32:55,346 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:32:55,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:32:55,346 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:32:55,346 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:32:55,346 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:32:55,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:32:55,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:32:55,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:32:55,411 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:32:55,411 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:32:55,412 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 09:32:55,479 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e51308f/33daeffcfcc344009ca1851637d5e2b6/FLAG99d1914da [2018-11-07 09:32:56,129 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:32:56,130 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 09:32:56,155 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e51308f/33daeffcfcc344009ca1851637d5e2b6/FLAG99d1914da [2018-11-07 09:32:56,173 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e51308f/33daeffcfcc344009ca1851637d5e2b6 [2018-11-07 09:32:56,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:32:56,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:32:56,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:32:56,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:32:56,191 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:32:56,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:32:56" (1/1) ... [2018-11-07 09:32:56,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e2595a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:56, skipping insertion in model container [2018-11-07 09:32:56,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:32:56" (1/1) ... [2018-11-07 09:32:56,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:32:56,324 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:32:57,318 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:32:57,323 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:32:57,742 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:32:57,765 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:32:57,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57 WrapperNode [2018-11-07 09:32:57,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:32:57,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:32:57,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:32:57,768 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:32:57,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:32:58,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:32:58,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:32:58,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:32:58,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... [2018-11-07 09:32:58,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:32:58,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:32:58,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:32:58,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:32:58,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:32:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:32:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:32:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:32:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:32:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:32:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:32:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:32:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:32:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:32:58,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:32:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:33:07,170 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:33:07,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:33:07 BoogieIcfgContainer [2018-11-07 09:33:07,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:33:07,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:33:07,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:33:07,176 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:33:07,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:32:56" (1/3) ... [2018-11-07 09:33:07,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e04121e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:33:07, skipping insertion in model container [2018-11-07 09:33:07,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:32:57" (2/3) ... [2018-11-07 09:33:07,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e04121e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:33:07, skipping insertion in model container [2018-11-07 09:33:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:33:07" (3/3) ... [2018-11-07 09:33:07,179 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-11-07 09:33:07,189 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:33:07,199 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:33:07,217 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:33:07,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:33:07,266 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:33:07,266 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:33:07,266 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:33:07,266 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:33:07,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:33:07,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:33:07,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:33:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:33:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 09:33:07,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:07,312 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:33:07,314 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:07,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:07,320 INFO L82 PathProgramCache]: Analyzing trace with hash -567488676, now seen corresponding path program 1 times [2018-11-07 09:33:07,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:07,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:07,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:07,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:07,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:33:07,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:33:07,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:33:07,813 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:07,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:33:07,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:33:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:33:07,838 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:33:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:18,616 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 09:33:18,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:33:18,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 09:33:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:18,649 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 09:33:18,649 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 09:33:18,661 INFO L604 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 [2018-11-07 09:33:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 09:33:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 09:33:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 09:33:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 09:33:18,815 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-11-07 09:33:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:18,816 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 09:33:18,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:33:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 09:33:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 09:33:18,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:18,826 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:33:18,826 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:18,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1938169354, now seen corresponding path program 1 times [2018-11-07 09:33:18,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:18,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:18,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:18,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:18,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:33:19,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:33:19,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:33:19,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:19,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:33:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:33:19,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:33:19,432 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 09:33:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:30,233 INFO L93 Difference]: Finished difference Result 5786 states and 10670 transitions. [2018-11-07 09:33:30,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:33:30,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 09:33:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:30,269 INFO L225 Difference]: With dead ends: 5786 [2018-11-07 09:33:30,269 INFO L226 Difference]: Without dead ends: 4267 [2018-11-07 09:33:30,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:33:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-07 09:33:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4241. [2018-11-07 09:33:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2018-11-07 09:33:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6348 transitions. [2018-11-07 09:33:30,464 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6348 transitions. Word has length 131 [2018-11-07 09:33:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:30,465 INFO L480 AbstractCegarLoop]: Abstraction has 4241 states and 6348 transitions. [2018-11-07 09:33:30,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:33:30,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6348 transitions. [2018-11-07 09:33:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 09:33:30,478 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:30,479 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:33:30,479 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:30,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1881840966, now seen corresponding path program 1 times [2018-11-07 09:33:30,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:30,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:30,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:30,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:30,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:33:30,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:33:30,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:33:30,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:30,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:33:30,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:33:30,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:33:30,715 INFO L87 Difference]: Start difference. First operand 4241 states and 6348 transitions. Second operand 6 states. [2018-11-07 09:33:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:36,336 INFO L93 Difference]: Finished difference Result 12261 states and 20027 transitions. [2018-11-07 09:33:36,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:33:36,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 09:33:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:36,397 INFO L225 Difference]: With dead ends: 12261 [2018-11-07 09:33:36,398 INFO L226 Difference]: Without dead ends: 8026 [2018-11-07 09:33:36,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:33:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2018-11-07 09:33:36,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 7941. [2018-11-07 09:33:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7941 states. [2018-11-07 09:33:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11952 transitions. [2018-11-07 09:33:36,711 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11952 transitions. Word has length 132 [2018-11-07 09:33:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:36,712 INFO L480 AbstractCegarLoop]: Abstraction has 7941 states and 11952 transitions. [2018-11-07 09:33:36,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:33:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11952 transitions. [2018-11-07 09:33:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 09:33:36,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:36,722 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:33:36,722 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:36,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash -502912620, now seen corresponding path program 1 times [2018-11-07 09:33:36,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:36,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:36,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:36,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:36,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 09:33:37,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:37,091 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:37,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-07 09:33:37,094 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:37,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:37,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:38,253 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:38,254 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:33:38,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:38,303 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:38,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:38,303 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:38,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:38,323 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:38,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:33:38,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:33:39,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:33:39,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:33:39,577 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:33:39,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:33:39,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:33:39,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:33:39,581 INFO L87 Difference]: Start difference. First operand 7941 states and 11952 transitions. Second operand 9 states. [2018-11-07 09:33:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:47,509 INFO L93 Difference]: Finished difference Result 19976 states and 30375 transitions. [2018-11-07 09:33:47,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 09:33:47,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2018-11-07 09:33:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:47,621 INFO L225 Difference]: With dead ends: 19976 [2018-11-07 09:33:47,621 INFO L226 Difference]: Without dead ends: 12006 [2018-11-07 09:33:47,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 410 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:33:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2018-11-07 09:33:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 11981. [2018-11-07 09:33:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11981 states. [2018-11-07 09:33:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11981 states to 11981 states and 15407 transitions. [2018-11-07 09:33:48,036 INFO L78 Accepts]: Start accepts. Automaton has 11981 states and 15407 transitions. Word has length 206 [2018-11-07 09:33:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:48,037 INFO L480 AbstractCegarLoop]: Abstraction has 11981 states and 15407 transitions. [2018-11-07 09:33:48,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:33:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 11981 states and 15407 transitions. [2018-11-07 09:33:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 09:33:48,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:48,044 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:33:48,045 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:48,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1533263748, now seen corresponding path program 1 times [2018-11-07 09:33:48,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:48,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:48,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:48,372 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:33:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:33:48,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:33:48,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:33:48,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:48,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:33:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:33:48,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:33:48,416 INFO L87 Difference]: Start difference. First operand 11981 states and 15407 transitions. Second operand 4 states. [2018-11-07 09:33:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:33:54,915 INFO L93 Difference]: Finished difference Result 32022 states and 44272 transitions. [2018-11-07 09:33:54,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:33:54,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-11-07 09:33:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:33:54,995 INFO L225 Difference]: With dead ends: 32022 [2018-11-07 09:33:54,995 INFO L226 Difference]: Without dead ends: 15975 [2018-11-07 09:33:55,079 INFO L604 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 [2018-11-07 09:33:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15975 states. [2018-11-07 09:33:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15975 to 13271. [2018-11-07 09:33:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13271 states. [2018-11-07 09:33:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 16243 transitions. [2018-11-07 09:33:55,438 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 16243 transitions. Word has length 219 [2018-11-07 09:33:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:33:55,439 INFO L480 AbstractCegarLoop]: Abstraction has 13271 states and 16243 transitions. [2018-11-07 09:33:55,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:33:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 16243 transitions. [2018-11-07 09:33:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 09:33:55,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:33:55,450 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:33:55,451 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:33:55,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash -562860899, now seen corresponding path program 1 times [2018-11-07 09:33:55,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:33:55,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:55,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:55,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:33:55,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:33:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:55,863 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:33:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 118 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:33:56,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:56,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:33:56,749 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 09:33:56,750 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:33:56,768 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:33:56,768 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:33:57,587 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:33:57,587 INFO L272 AbstractInterpreter]: Visited 200 different actions 399 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:33:57,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:33:57,625 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:33:57,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:33:57,626 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:33:57,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:33:57,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:33:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:33:57,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:33:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:33:58,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:33:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:33:58,691 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:33:58,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 09:33:58,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:33:58,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:33:58,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:33:58,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:33:58,693 INFO L87 Difference]: Start difference. First operand 13271 states and 16243 transitions. Second operand 3 states. [2018-11-07 09:34:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:01,130 INFO L93 Difference]: Finished difference Result 26536 states and 32480 transitions. [2018-11-07 09:34:01,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:34:01,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-11-07 09:34:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:01,187 INFO L225 Difference]: With dead ends: 26536 [2018-11-07 09:34:01,187 INFO L226 Difference]: Without dead ends: 13271 [2018-11-07 09:34:01,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 662 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:34:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2018-11-07 09:34:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 13271. [2018-11-07 09:34:01,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13271 states. [2018-11-07 09:34:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 15928 transitions. [2018-11-07 09:34:01,458 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 15928 transitions. Word has length 331 [2018-11-07 09:34:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:01,459 INFO L480 AbstractCegarLoop]: Abstraction has 13271 states and 15928 transitions. [2018-11-07 09:34:01,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:34:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 15928 transitions. [2018-11-07 09:34:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-11-07 09:34:01,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:01,471 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:34:01,471 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:01,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 897107937, now seen corresponding path program 1 times [2018-11-07 09:34:01,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:01,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:01,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:01,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:01,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:34:02,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:02,175 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:34:02,175 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 357 with the following transitions: [2018-11-07 09:34:02,176 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1474], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:34:02,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:34:02,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:34:02,600 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:34:02,601 INFO L272 AbstractInterpreter]: Visited 139 different actions 280 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:34:02,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:02,638 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:34:02,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:02,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:34:02,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:02,652 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:34:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:02,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:34:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:34:03,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:34:03,340 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:34:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:34:03,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:34:03,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:34:03,665 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:34:03,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:34:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:34:03,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:34:03,667 INFO L87 Difference]: Start difference. First operand 13271 states and 15928 transitions. Second operand 7 states. [2018-11-07 09:34:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:11,626 INFO L93 Difference]: Finished difference Result 46291 states and 59312 transitions. [2018-11-07 09:34:11,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 09:34:11,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2018-11-07 09:34:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:11,740 INFO L225 Difference]: With dead ends: 46291 [2018-11-07 09:34:11,740 INFO L226 Difference]: Without dead ends: 30385 [2018-11-07 09:34:11,787 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:34:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30385 states. [2018-11-07 09:34:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30385 to 28469. [2018-11-07 09:34:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28469 states. [2018-11-07 09:34:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28469 states to 28469 states and 34315 transitions. [2018-11-07 09:34:12,347 INFO L78 Accepts]: Start accepts. Automaton has 28469 states and 34315 transitions. Word has length 356 [2018-11-07 09:34:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:12,349 INFO L480 AbstractCegarLoop]: Abstraction has 28469 states and 34315 transitions. [2018-11-07 09:34:12,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:34:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28469 states and 34315 transitions. [2018-11-07 09:34:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-11-07 09:34:12,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:12,526 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:34:12,526 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:12,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash -337293599, now seen corresponding path program 1 times [2018-11-07 09:34:12,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:12,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:12,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:12,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:12,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 09:34:13,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:13,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:34:13,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:13,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:34:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:34:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:34:13,014 INFO L87 Difference]: Start difference. First operand 28469 states and 34315 transitions. Second operand 4 states. [2018-11-07 09:34:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:17,635 INFO L93 Difference]: Finished difference Result 75303 states and 92392 transitions. [2018-11-07 09:34:17,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:34:17,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-11-07 09:34:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:17,775 INFO L225 Difference]: With dead ends: 75303 [2018-11-07 09:34:17,775 INFO L226 Difference]: Without dead ends: 38754 [2018-11-07 09:34:17,852 INFO L604 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 [2018-11-07 09:34:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38754 states. [2018-11-07 09:34:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38754 to 37853. [2018-11-07 09:34:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37853 states. [2018-11-07 09:34:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37853 states to 37853 states and 45049 transitions. [2018-11-07 09:34:18,478 INFO L78 Accepts]: Start accepts. Automaton has 37853 states and 45049 transitions. Word has length 379 [2018-11-07 09:34:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:18,478 INFO L480 AbstractCegarLoop]: Abstraction has 37853 states and 45049 transitions. [2018-11-07 09:34:18,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:34:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 37853 states and 45049 transitions. [2018-11-07 09:34:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-07 09:34:18,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:18,503 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-07 09:34:18,503 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:18,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash -111931155, now seen corresponding path program 1 times [2018-11-07 09:34:18,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:18,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:18,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:18,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:18,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 195 proven. 314 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-11-07 09:34:19,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:19,164 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:34:19,164 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 455 with the following transitions: [2018-11-07 09:34:19,165 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:34:19,170 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:34:19,170 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:34:19,712 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:34:19,713 INFO L272 AbstractInterpreter]: Visited 161 different actions 326 times. Merged at 9 different actions 16 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:34:19,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:19,753 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:34:19,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:19,753 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:34:19,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:19,766 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:34:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:19,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:34:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 09:34:20,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:34:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 09:34:20,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:34:20,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 09:34:20,699 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:34:20,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:34:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:34:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:34:20,701 INFO L87 Difference]: Start difference. First operand 37853 states and 45049 transitions. Second operand 10 states. [2018-11-07 09:34:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:40,685 INFO L93 Difference]: Finished difference Result 100236 states and 119981 transitions. [2018-11-07 09:34:40,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-11-07 09:34:40,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 454 [2018-11-07 09:34:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:40,845 INFO L225 Difference]: With dead ends: 100236 [2018-11-07 09:34:40,845 INFO L226 Difference]: Without dead ends: 61504 [2018-11-07 09:34:40,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=712, Invalid=3980, Unknown=0, NotChecked=0, Total=4692 [2018-11-07 09:34:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61504 states. [2018-11-07 09:34:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61504 to 55520. [2018-11-07 09:34:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55520 states. [2018-11-07 09:34:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55520 states to 55520 states and 65100 transitions. [2018-11-07 09:34:41,742 INFO L78 Accepts]: Start accepts. Automaton has 55520 states and 65100 transitions. Word has length 454 [2018-11-07 09:34:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:41,743 INFO L480 AbstractCegarLoop]: Abstraction has 55520 states and 65100 transitions. [2018-11-07 09:34:41,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:34:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 55520 states and 65100 transitions. [2018-11-07 09:34:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-11-07 09:34:41,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:41,798 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:34:41,799 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:41,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash -911093887, now seen corresponding path program 1 times [2018-11-07 09:34:41,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:41,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:41,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:41,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:41,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-07 09:34:42,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:42,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:34:42,514 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 667 with the following transitions: [2018-11-07 09:34:42,514 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [196], [199], [203], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:34:42,525 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:34:42,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:34:43,911 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:34:43,912 INFO L272 AbstractInterpreter]: Visited 343 different actions 687 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:34:43,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:43,944 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:34:43,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:43,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:34:43,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:43,956 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:34:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:44,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:34:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-11-07 09:34:44,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:34:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 202 proven. 8 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-11-07 09:34:44,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:34:44,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-11-07 09:34:44,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:44,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:34:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:34:44,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:44,800 INFO L87 Difference]: Start difference. First operand 55520 states and 65100 transitions. Second operand 3 states. [2018-11-07 09:34:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:46,545 INFO L93 Difference]: Finished difference Result 110130 states and 129175 transitions. [2018-11-07 09:34:46,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:34:46,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 666 [2018-11-07 09:34:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:46,695 INFO L225 Difference]: With dead ends: 110130 [2018-11-07 09:34:46,695 INFO L226 Difference]: Without dead ends: 55050 [2018-11-07 09:34:46,765 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1327 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55050 states. [2018-11-07 09:34:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55050 to 55049. [2018-11-07 09:34:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55049 states. [2018-11-07 09:34:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55049 states to 55049 states and 64323 transitions. [2018-11-07 09:34:48,008 INFO L78 Accepts]: Start accepts. Automaton has 55049 states and 64323 transitions. Word has length 666 [2018-11-07 09:34:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:48,009 INFO L480 AbstractCegarLoop]: Abstraction has 55049 states and 64323 transitions. [2018-11-07 09:34:48,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:34:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 55049 states and 64323 transitions. [2018-11-07 09:34:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2018-11-07 09:34:48,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:48,066 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:34:48,066 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:48,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash -234565824, now seen corresponding path program 1 times [2018-11-07 09:34:48,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:48,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:48,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:48,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:48,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 192 proven. 349 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-07 09:34:49,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:49,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:34:49,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 719 with the following transitions: [2018-11-07 09:34:49,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [592], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:34:49,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:34:49,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:34:50,399 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:34:50,400 INFO L272 AbstractInterpreter]: Visited 422 different actions 842 times. Merged at 9 different actions 15 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:34:50,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:50,438 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:34:50,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:50,438 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:34:50,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:50,455 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:34:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:50,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:34:58,495 WARN L179 SmtUtils]: Spent 7.49 s on a formula simplification. DAG size of input: 319 DAG size of output: 39 [2018-11-07 09:34:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 09:34:59,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:34:59,437 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-11-07 09:35:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 09:35:00,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:35:00,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-11-07 09:35:00,573 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:35:00,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 09:35:00,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 09:35:00,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:35:00,576 INFO L87 Difference]: Start difference. First operand 55049 states and 64323 transitions. Second operand 14 states. [2018-11-07 09:35:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:24,686 INFO L93 Difference]: Finished difference Result 118357 states and 141024 transitions. [2018-11-07 09:35:24,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-07 09:35:24,686 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 718 [2018-11-07 09:35:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:24,884 INFO L225 Difference]: With dead ends: 118357 [2018-11-07 09:35:24,884 INFO L226 Difference]: Without dead ends: 63314 [2018-11-07 09:35:24,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1535 GetRequests, 1471 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=571, Invalid=3461, Unknown=0, NotChecked=0, Total=4032 [2018-11-07 09:35:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63314 states. [2018-11-07 09:35:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63314 to 60908. [2018-11-07 09:35:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60908 states. [2018-11-07 09:35:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60908 states to 60908 states and 70594 transitions. [2018-11-07 09:35:26,050 INFO L78 Accepts]: Start accepts. Automaton has 60908 states and 70594 transitions. Word has length 718 [2018-11-07 09:35:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:26,051 INFO L480 AbstractCegarLoop]: Abstraction has 60908 states and 70594 transitions. [2018-11-07 09:35:26,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 09:35:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 60908 states and 70594 transitions. [2018-11-07 09:35:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-11-07 09:35:26,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:26,600 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:35:26,600 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:26,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:26,600 INFO L82 PathProgramCache]: Analyzing trace with hash -975494105, now seen corresponding path program 1 times [2018-11-07 09:35:26,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:26,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:26,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:26,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:26,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:27,745 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 09:35:28,088 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 09:35:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 193 proven. 494 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 09:35:29,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:35:29,988 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:35:29,988 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 727 with the following transitions: [2018-11-07 09:35:29,989 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1766], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:35:29,996 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:35:29,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:35:31,097 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:35:31,097 INFO L272 AbstractInterpreter]: Visited 336 different actions 673 times. Merged at 9 different actions 16 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:35:31,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:31,138 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:35:31,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:35:31,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:35:31,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:31,152 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:35:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:31,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:35:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 550 proven. 55 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-07 09:35:32,319 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:35:32,726 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-11-07 09:35:33,165 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2018-11-07 09:35:33,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 09:35:33,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-07 09:35:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 191 proven. 496 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 09:35:35,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:35:35,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2018-11-07 09:35:35,402 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:35:35,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 09:35:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 09:35:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2018-11-07 09:35:35,404 INFO L87 Difference]: Start difference. First operand 60908 states and 70594 transitions. Second operand 22 states. [2018-11-07 09:35:36,238 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2018-11-07 09:35:37,337 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-11-07 09:35:37,561 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-11-07 09:35:40,662 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-11-07 09:35:41,044 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:35:41,852 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-11-07 09:35:42,027 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:35:42,448 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-11-07 09:35:44,562 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:35:46,707 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-11-07 09:35:47,338 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-11-07 09:35:49,285 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-11-07 09:35:50,829 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-11-07 09:35:51,173 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-11-07 09:35:51,654 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-11-07 09:35:51,910 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:35:54,107 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-11-07 09:35:54,461 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-11-07 09:35:56,728 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-11-07 09:35:56,894 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-11-07 09:35:57,167 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-11-07 09:35:58,681 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-11-07 09:35:59,456 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2018-11-07 09:36:04,099 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2018-11-07 09:36:06,895 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2018-11-07 09:36:07,814 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-07 09:36:11,689 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-11-07 09:36:12,484 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2018-11-07 09:36:13,213 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-11-07 09:36:14,599 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-11-07 09:36:16,832 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-11-07 09:36:18,008 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2018-11-07 09:36:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:36:19,878 INFO L93 Difference]: Finished difference Result 144709 states and 170837 transitions. [2018-11-07 09:36:19,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-11-07 09:36:19,879 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 726 [2018-11-07 09:36:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:36:20,120 INFO L225 Difference]: With dead ends: 144709 [2018-11-07 09:36:20,121 INFO L226 Difference]: Without dead ends: 84333 [2018-11-07 09:36:20,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1520 SyntacticMatches, 8 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6760 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=3161, Invalid=16299, Unknown=0, NotChecked=0, Total=19460 [2018-11-07 09:36:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84333 states. [2018-11-07 09:36:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84333 to 77707. [2018-11-07 09:36:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77707 states. [2018-11-07 09:36:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77707 states to 77707 states and 90376 transitions. [2018-11-07 09:36:21,814 INFO L78 Accepts]: Start accepts. Automaton has 77707 states and 90376 transitions. Word has length 726 [2018-11-07 09:36:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:36:21,815 INFO L480 AbstractCegarLoop]: Abstraction has 77707 states and 90376 transitions. [2018-11-07 09:36:21,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 09:36:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 77707 states and 90376 transitions. [2018-11-07 09:36:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-11-07 09:36:21,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:36:21,867 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:36:21,868 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:36:21,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1844283531, now seen corresponding path program 1 times [2018-11-07 09:36:21,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:36:21,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:21,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:21,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:21,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:36:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:22,740 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-11-07 09:36:23,172 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 09:36:23,518 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 09:36:23,732 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 09:36:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 506 proven. 48 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-07 09:36:24,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:36:24,654 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:36:24,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 736 with the following transitions: [2018-11-07 09:36:24,655 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [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], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:36:24,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:36:24,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:36:25,351 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:36:25,351 INFO L272 AbstractInterpreter]: Visited 337 different actions 676 times. Merged at 10 different actions 17 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:36:25,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:25,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:36:25,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:36:25,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:36:25,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:25,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:36:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:25,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:36:28,941 WARN L179 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 2885 DAG size of output: 74 [2018-11-07 09:36:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 806 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-11-07 09:36:30,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:36:31,489 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-11-07 09:36:31,991 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-11-07 09:36:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 546 proven. 8 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-07 09:36:33,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:36:33,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 18 [2018-11-07 09:36:33,254 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:36:33,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:36:33,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:36:33,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:36:33,256 INFO L87 Difference]: Start difference. First operand 77707 states and 90376 transitions. Second operand 13 states. Received shutdown request... [2018-11-07 09:36:37,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 09:36:37,872 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:36:37,878 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:36:37,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:36:37 BoogieIcfgContainer [2018-11-07 09:36:37,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:36:37,879 INFO L168 Benchmark]: Toolchain (without parser) took 221694.09 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 565.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:36:37,880 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:36:37,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1579.27 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. [2018-11-07 09:36:37,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 357.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -980.1 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:36:37,882 INFO L168 Benchmark]: Boogie Preprocessor took 233.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:36:37,883 INFO L168 Benchmark]: RCFGBuilder took 8811.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 474.2 MB). Peak memory consumption was 474.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:36:37,883 INFO L168 Benchmark]: TraceAbstraction took 210705.86 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:36:37,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1579.27 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 357.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -980.1 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 233.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8811.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 474.2 MB). Peak memory consumption was 474.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210705.86 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 143). Cancelled while BasicCegarLoop was constructing difference of abstraction (77707states) and FLOYD_HOARE automaton (currently 14 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (1482 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 210.6s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 153.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3974 SDtfs, 42549 SDslu, 5525 SDs, 0 SdLazy, 79330 SolverSat, 10299 SolverUnsat, 229 SolverUnknown, 0 SolverNotchecked, 114.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8924 GetRequests, 8549 SyntacticMatches, 25 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9653 ImplicationChecksByTransitivity, 35.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77707occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.3s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 20701 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 34.4s InterpolantComputationTime, 9297 NumberOfCodeBlocks, 9297 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 13460 ConstructedInterpolants, 119 QuantifiedInterpolants, 36789066 SizeOfPredicates, 27 NumberOfNonLiveVariables, 6298 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 12826/14678 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown