java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label52_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:30:35,092 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:30:35,095 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:30:35,114 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:30:35,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:30:35,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:30:35,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:30:35,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:30:35,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:30:35,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:30:35,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:30:35,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:30:35,136 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:30:35,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:30:35,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:30:35,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:30:35,143 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:30:35,147 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:30:35,151 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:30:35,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:30:35,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:30:35,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:30:35,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:30:35,161 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:30:35,161 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:30:35,162 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:30:35,162 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:30:35,163 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:30:35,164 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:30:35,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:30:35,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:30:35,168 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:30:35,169 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:30:35,169 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:30:35,170 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:30:35,170 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:30:35,173 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:30:35,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:30:35,199 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:30:35,200 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:30:35,200 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:30:35,200 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:30:35,200 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:30:35,200 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:30:35,200 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:30:35,201 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:30:35,201 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:30:35,201 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:30:35,201 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:30:35,201 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:30:35,202 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:30:35,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:30:35,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:30:35,203 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:30:35,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:30:35,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:30:35,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:30:35,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:30:35,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:30:35,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:30:35,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:30:35,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:30:35,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:30:35,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:30:35,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:30:35,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:30:35,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:30:35,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:30:35,206 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:30:35,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:30:35,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:30:35,206 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:30:35,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:30:35,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:30:35,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:30:35,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:30:35,273 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:30:35,274 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:30:35,274 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label52_false-unreach-call_false-termination.c [2018-10-27 05:30:35,343 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a66a27fc/d59c34fa46344b95b149ff24cc6870aa/FLAGdf9f7db2e [2018-10-27 05:30:36,001 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:30:36,002 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label52_false-unreach-call_false-termination.c [2018-10-27 05:30:36,021 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a66a27fc/d59c34fa46344b95b149ff24cc6870aa/FLAGdf9f7db2e [2018-10-27 05:30:36,036 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a66a27fc/d59c34fa46344b95b149ff24cc6870aa [2018-10-27 05:30:36,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:30:36,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:30:36,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:30:36,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:30:36,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:30:36,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:36,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36, skipping insertion in model container [2018-10-27 05:30:36,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:36,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:30:36,164 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:30:36,771 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:30:36,776 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:30:36,950 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:30:36,973 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:30:36,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36 WrapperNode [2018-10-27 05:30:36,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:30:36,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:30:36,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:30:36,975 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:30:36,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:30:37,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:30:37,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:30:37,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:30:37,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... [2018-10-27 05:30:37,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:30:37,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:30:37,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:30:37,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:30:37,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:30:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:30:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:30:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:30:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:30:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:30:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:30:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:30:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:30:41,103 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:30:41,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:41 BoogieIcfgContainer [2018-10-27 05:30:41,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:30:41,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:30:41,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:30:41,109 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:30:41,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:30:36" (1/3) ... [2018-10-27 05:30:41,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8312f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:41, skipping insertion in model container [2018-10-27 05:30:41,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:36" (2/3) ... [2018-10-27 05:30:41,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8312f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:41, skipping insertion in model container [2018-10-27 05:30:41,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:41" (3/3) ... [2018-10-27 05:30:41,112 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label52_false-unreach-call_false-termination.c [2018-10-27 05:30:41,122 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:30:41,131 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:30:41,148 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:30:41,187 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:30:41,188 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:30:41,189 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:30:41,189 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:30:41,189 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:30:41,189 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:30:41,189 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:30:41,189 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:30:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:30:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-27 05:30:41,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:41,224 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] [2018-10-27 05:30:41,226 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:41,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:41,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1208637865, now seen corresponding path program 1 times [2018-10-27 05:30:41,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:41,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:41,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:41,655 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:30:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:30:41,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:30:41,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:30:41,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:41,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:30:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:30:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:30:41,796 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:30:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:43,417 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:30:43,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:30:43,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-27 05:30:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:43,449 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:30:43,449 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:30:43,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:30:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:30:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:30:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:30:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 05:30:43,550 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 29 [2018-10-27 05:30:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:43,551 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 05:30:43,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:30:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 05:30:43,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-27 05:30:43,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:43,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:43,559 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:43,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:43,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1035560415, now seen corresponding path program 1 times [2018-10-27 05:30:43,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:43,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:43,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:43,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:43,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:30:43,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:30:43,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:30:43,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:43,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:30:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:30:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:30:43,896 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 05:30:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:46,224 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 05:30:46,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:30:46,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-27 05:30:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:46,234 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 05:30:46,234 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 05:30:46,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:30:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 05:30:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 05:30:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 05:30:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 05:30:46,276 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 116 [2018-10-27 05:30:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:46,276 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 05:30:46,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:30:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 05:30:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 05:30:46,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:46,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:46,281 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:46,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2098713064, now seen corresponding path program 1 times [2018-10-27 05:30:46,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:46,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:46,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:46,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:46,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:30:46,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:30:46,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:30:46,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:46,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:30:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:30:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:30:46,476 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-27 05:30:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:49,870 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-27 05:30:49,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:30:49,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2018-10-27 05:30:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:49,888 INFO L225 Difference]: With dead ends: 2352 [2018-10-27 05:30:49,889 INFO L226 Difference]: Without dead ends: 1733 [2018-10-27 05:30:49,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:30:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-27 05:30:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-27 05:30:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-27 05:30:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-27 05:30:49,974 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 125 [2018-10-27 05:30:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:49,975 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-27 05:30:49,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:30:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-27 05:30:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-27 05:30:49,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:49,993 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:30:49,994 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:49,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash -839398590, now seen corresponding path program 1 times [2018-10-27 05:30:49,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:49,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:49,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:49,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:49,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:50,701 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-27 05:30:51,042 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:30:51,488 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-27 05:30:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 44 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:30:51,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:51,590 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:51,591 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-27 05:30:51,593 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:51,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:51,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:56,146 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:30:56,148 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:30:56,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:56,170 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:30:59,037 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-27 05:30:59,037 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:30:59,312 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-10-27 05:30:59,313 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:30:59,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:30:59,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 05:30:59,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:30:59,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:30:59,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:30:59,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:30:59,316 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 6 states. [2018-10-27 05:31:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:10,826 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-10-27 05:31:10,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:31:10,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2018-10-27 05:31:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:10,839 INFO L225 Difference]: With dead ends: 3645 [2018-10-27 05:31:10,839 INFO L226 Difference]: Without dead ends: 1918 [2018-10-27 05:31:10,848 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:31:10,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-27 05:31:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-27 05:31:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-27 05:31:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-10-27 05:31:10,903 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 254 [2018-10-27 05:31:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:10,904 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-10-27 05:31:10,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:31:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-10-27 05:31:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-27 05:31:10,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:10,915 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:10,915 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:10,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1746897264, now seen corresponding path program 1 times [2018-10-27 05:31:10,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:10,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:10,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:10,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:10,918 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 154 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:31:11,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:11,817 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:11,817 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-27 05:31:11,818 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:11,823 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:11,824 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:15,590 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:31:15,591 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:31:15,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:15,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:31:17,687 INFO L227 lantSequenceWeakener]: Weakened 336 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-27 05:31:17,687 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:31:18,343 INFO L415 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2018-10-27 05:31:18,343 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:31:18,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:31:18,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 05:31:18,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:31:18,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:31:18,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:31:18,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:31:18,345 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 10 states. [2018-10-27 05:31:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:53,871 INFO L93 Difference]: Finished difference Result 4389 states and 6461 transitions. [2018-10-27 05:31:53,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:31:53,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 339 [2018-10-27 05:31:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:53,884 INFO L225 Difference]: With dead ends: 4389 [2018-10-27 05:31:53,884 INFO L226 Difference]: Without dead ends: 2292 [2018-10-27 05:31:53,895 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 347 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:31:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2018-10-27 05:31:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2290. [2018-10-27 05:31:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2018-10-27 05:31:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3235 transitions. [2018-10-27 05:31:53,955 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3235 transitions. Word has length 339 [2018-10-27 05:31:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:53,956 INFO L481 AbstractCegarLoop]: Abstraction has 2290 states and 3235 transitions. [2018-10-27 05:31:53,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:31:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3235 transitions. [2018-10-27 05:31:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-10-27 05:31:53,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:53,970 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:53,970 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:53,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash 754743257, now seen corresponding path program 1 times [2018-10-27 05:31:53,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:53,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:53,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:53,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:53,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:54,813 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:31:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 286 proven. 249 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 05:31:55,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:55,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:55,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-10-27 05:31:55,583 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:55,587 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:55,588 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:59,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:31:59,444 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:31:59,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:59,449 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:32:01,580 INFO L227 lantSequenceWeakener]: Weakened 436 states. On average, predicates are now at 77.5% of their original sizes. [2018-10-27 05:32:01,580 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:32:02,362 INFO L415 sIntCurrentIteration]: We unified 438 AI predicates to 438 [2018-10-27 05:32:02,362 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:32:02,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:32:02,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 05:32:02,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:02,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:32:02,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:32:02,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:32:02,365 INFO L87 Difference]: Start difference. First operand 2290 states and 3235 transitions. Second operand 10 states. [2018-10-27 05:32:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:20,199 INFO L93 Difference]: Finished difference Result 4205 states and 6085 transitions. [2018-10-27 05:32:20,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:32:20,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 439 [2018-10-27 05:32:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:20,211 INFO L225 Difference]: With dead ends: 4205 [2018-10-27 05:32:20,211 INFO L226 Difference]: Without dead ends: 2104 [2018-10-27 05:32:20,220 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 446 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:32:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2018-10-27 05:32:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2101. [2018-10-27 05:32:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-10-27 05:32:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3020 transitions. [2018-10-27 05:32:20,277 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3020 transitions. Word has length 439 [2018-10-27 05:32:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:20,279 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 3020 transitions. [2018-10-27 05:32:20,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:32:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3020 transitions. [2018-10-27 05:32:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-10-27 05:32:20,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:20,295 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:32:20,295 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:20,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash -834363183, now seen corresponding path program 1 times [2018-10-27 05:32:20,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:20,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:20,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:20,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:20,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:21,152 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:32:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 320 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 05:32:21,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:21,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:21,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 476 with the following transitions: [2018-10-27 05:32:21,822 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:21,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:21,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:30,250 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:32:30,250 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:32:30,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:30,260 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:32:31,494 INFO L227 lantSequenceWeakener]: Weakened 472 states. On average, predicates are now at 80.15% of their original sizes. [2018-10-27 05:32:31,494 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:32:31,579 INFO L415 sIntCurrentIteration]: We unified 474 AI predicates to 474 [2018-10-27 05:32:31,579 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:32:31,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:32:31,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:32:31,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:31,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:32:31,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:32:31,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:32:31,581 INFO L87 Difference]: Start difference. First operand 2101 states and 3020 transitions. Second operand 9 states. [2018-10-27 05:32:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:49,829 INFO L93 Difference]: Finished difference Result 4544 states and 6766 transitions. [2018-10-27 05:32:49,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:32:49,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 475 [2018-10-27 05:32:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:49,842 INFO L225 Difference]: With dead ends: 4544 [2018-10-27 05:32:49,843 INFO L226 Difference]: Without dead ends: 2817 [2018-10-27 05:32:49,852 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 481 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:32:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-10-27 05:32:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2801. [2018-10-27 05:32:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2018-10-27 05:32:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3921 transitions. [2018-10-27 05:32:49,921 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3921 transitions. Word has length 475 [2018-10-27 05:32:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:49,922 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3921 transitions. [2018-10-27 05:32:49,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:32:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3921 transitions. [2018-10-27 05:32:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-10-27 05:32:49,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:49,940 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, 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, 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, 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] [2018-10-27 05:32:49,940 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:49,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 287781920, now seen corresponding path program 1 times [2018-10-27 05:32:49,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:49,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:49,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:49,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:49,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 322 proven. 321 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 05:32:51,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:51,471 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:51,472 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-10-27 05:32:51,472 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:51,477 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:51,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:56,984 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:32:56,985 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:32:56,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:56,995 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:32:56,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:56,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:32:57,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:57,005 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:32:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:57,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:32:58,285 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-27 05:32:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 620 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-27 05:32:58,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:32:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 320 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 05:32:59,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:32:59,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:32:59,290 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:32:59,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:32:59,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:32:59,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:32:59,295 INFO L87 Difference]: Start difference. First operand 2801 states and 3921 transitions. Second operand 17 states. [2018-10-27 05:33:03,996 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:33:04,274 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:33:06,407 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 05:33:11,011 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-10-27 05:33:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:13,127 INFO L93 Difference]: Finished difference Result 7624 states and 11596 transitions. [2018-10-27 05:33:13,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-27 05:33:13,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 542 [2018-10-27 05:33:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:13,161 INFO L225 Difference]: With dead ends: 7624 [2018-10-27 05:33:13,161 INFO L226 Difference]: Without dead ends: 5197 [2018-10-27 05:33:13,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 05:33:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2018-10-27 05:33:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5082. [2018-10-27 05:33:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5082 states. [2018-10-27 05:33:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6907 transitions. [2018-10-27 05:33:13,331 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6907 transitions. Word has length 542 [2018-10-27 05:33:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:13,332 INFO L481 AbstractCegarLoop]: Abstraction has 5082 states and 6907 transitions. [2018-10-27 05:33:13,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:33:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6907 transitions. [2018-10-27 05:33:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-27 05:33:13,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:13,348 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, 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, 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, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:33:13,348 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:13,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:13,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2018425497, now seen corresponding path program 1 times [2018-10-27 05:33:13,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:13,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:13,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:13,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:13,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:13,867 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:33:14,598 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 05:33:15,033 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 05:33:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 429 proven. 457 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-27 05:33:15,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:15,750 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:15,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 549 with the following transitions: [2018-10-27 05:33:15,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:15,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:15,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:26,943 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:33:26,943 INFO L272 AbstractInterpreter]: Visited 125 different actions 494 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:33:26,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:26,951 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:33:26,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:26,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:33:26,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:26,961 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:27,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-27 05:33:27,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:33:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 423 proven. 111 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-10-27 05:33:28,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:33:28,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 05:33:28,300 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:33:28,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:33:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:33:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:33:28,302 INFO L87 Difference]: Start difference. First operand 5082 states and 6907 transitions. Second operand 17 states. [2018-10-27 05:33:28,624 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-27 05:33:34,387 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-10-27 05:33:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:35,476 INFO L93 Difference]: Finished difference Result 11226 states and 16067 transitions. [2018-10-27 05:33:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-27 05:33:35,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 548 [2018-10-27 05:33:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:35,510 INFO L225 Difference]: With dead ends: 11226 [2018-10-27 05:33:35,510 INFO L226 Difference]: Without dead ends: 5403 [2018-10-27 05:33:35,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1107 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 05:33:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2018-10-27 05:33:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5269. [2018-10-27 05:33:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5269 states. [2018-10-27 05:33:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6265 transitions. [2018-10-27 05:33:35,712 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6265 transitions. Word has length 548 [2018-10-27 05:33:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:35,713 INFO L481 AbstractCegarLoop]: Abstraction has 5269 states and 6265 transitions. [2018-10-27 05:33:35,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:33:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6265 transitions. [2018-10-27 05:33:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-10-27 05:33:35,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:35,727 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, 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, 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, 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] [2018-10-27 05:33:35,727 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:35,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1952249540, now seen corresponding path program 2 times [2018-10-27 05:33:35,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:35,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:35,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:35,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:35,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 461 proven. 111 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-10-27 05:33:36,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:36,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:36,433 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 05:33:36,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:33:36,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:36,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:33:36,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 05:33:36,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 05:33:36,500 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-27 05:33:36,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 05:33:36,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:36,925 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 05:33:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2018-10-27 05:33:37,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:33:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2018-10-27 05:33:37,669 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:33:37,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-27 05:33:37,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:33:37,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:33:37,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:33:37,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:33:37,671 INFO L87 Difference]: Start difference. First operand 5269 states and 6265 transitions. Second operand 3 states. [2018-10-27 05:33:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:39,375 INFO L93 Difference]: Finished difference Result 12875 states and 15549 transitions. [2018-10-27 05:33:39,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:33:39,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 653 [2018-10-27 05:33:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:39,426 INFO L225 Difference]: With dead ends: 12875 [2018-10-27 05:33:39,426 INFO L226 Difference]: Without dead ends: 7980 [2018-10-27 05:33:39,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1305 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:33:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2018-10-27 05:33:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 7968. [2018-10-27 05:33:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7968 states. [2018-10-27 05:33:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 9230 transitions. [2018-10-27 05:33:39,625 INFO L78 Accepts]: Start accepts. Automaton has 7968 states and 9230 transitions. Word has length 653 [2018-10-27 05:33:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:39,626 INFO L481 AbstractCegarLoop]: Abstraction has 7968 states and 9230 transitions. [2018-10-27 05:33:39,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:33:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 7968 states and 9230 transitions. [2018-10-27 05:33:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2018-10-27 05:33:39,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:39,648 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:33:39,649 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:39,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1073650876, now seen corresponding path program 1 times [2018-10-27 05:33:39,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:39,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:39,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 05:33:39,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:39,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 461 proven. 175 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-10-27 05:33:40,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:40,432 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:40,433 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 718 with the following transitions: [2018-10-27 05:33:40,433 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:40,436 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:40,436 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:46,200 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:33:46,200 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:33:46,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:46,207 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:33:46,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:46,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:33:46,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:46,216 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:46,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 931 proven. 2 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-10-27 05:33:47,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:33:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 461 proven. 175 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-10-27 05:33:47,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:33:47,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:33:47,560 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:33:47,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:33:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:33:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:33:47,562 INFO L87 Difference]: Start difference. First operand 7968 states and 9230 transitions. Second operand 7 states. [2018-10-27 05:33:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:51,673 INFO L93 Difference]: Finished difference Result 22229 states and 29828 transitions. [2018-10-27 05:33:51,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:33:51,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 717 [2018-10-27 05:33:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:51,775 INFO L225 Difference]: With dead ends: 22229 [2018-10-27 05:33:51,776 INFO L226 Difference]: Without dead ends: 14635 [2018-10-27 05:33:51,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1451 GetRequests, 1437 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:33:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2018-10-27 05:33:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 14265. [2018-10-27 05:33:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14265 states. [2018-10-27 05:33:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 16746 transitions. [2018-10-27 05:33:52,279 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 16746 transitions. Word has length 717 [2018-10-27 05:33:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:52,280 INFO L481 AbstractCegarLoop]: Abstraction has 14265 states and 16746 transitions. [2018-10-27 05:33:52,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:33:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 16746 transitions. [2018-10-27 05:33:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2018-10-27 05:33:52,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:52,317 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:33:52,317 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:52,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:52,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1355681563, now seen corresponding path program 1 times [2018-10-27 05:33:52,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:52,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:52,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:52,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:52,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 468 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-10-27 05:33:53,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:53,440 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:53,441 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 725 with the following transitions: [2018-10-27 05:33:53,441 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:53,444 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:53,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:59,273 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:33:59,273 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:33:59,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:59,280 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:33:59,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:59,280 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:33:59,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:59,292 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:59,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 945 proven. 2 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-10-27 05:33:59,818 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 468 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-10-27 05:34:00,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:00,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:34:00,244 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:00,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:34:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:34:00,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:34:00,246 INFO L87 Difference]: Start difference. First operand 14265 states and 16746 transitions. Second operand 7 states. [2018-10-27 05:34:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:34:03,227 INFO L93 Difference]: Finished difference Result 33579 states and 46108 transitions. [2018-10-27 05:34:03,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:34:03,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 724 [2018-10-27 05:34:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:34:03,395 INFO L225 Difference]: With dead ends: 33579 [2018-10-27 05:34:03,395 INFO L226 Difference]: Without dead ends: 19688 [2018-10-27 05:34:03,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1451 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:34:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19688 states. [2018-10-27 05:34:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 19186. [2018-10-27 05:34:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19186 states. [2018-10-27 05:34:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19186 states to 19186 states and 23041 transitions. [2018-10-27 05:34:04,162 INFO L78 Accepts]: Start accepts. Automaton has 19186 states and 23041 transitions. Word has length 724 [2018-10-27 05:34:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:34:04,163 INFO L481 AbstractCegarLoop]: Abstraction has 19186 states and 23041 transitions. [2018-10-27 05:34:04,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:34:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 19186 states and 23041 transitions. [2018-10-27 05:34:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-10-27 05:34:04,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:34:04,213 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-27 05:34:04,213 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:34:04,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:04,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1326581727, now seen corresponding path program 1 times [2018-10-27 05:34:04,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:34:04,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:04,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:04,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:04,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:34:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:04,998 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-27 05:34:05,308 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-27 05:34:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 504 proven. 897 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-10-27 05:34:06,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:06,570 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:34:06,570 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 852 with the following transitions: [2018-10-27 05:34:06,570 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:34:06,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:34:06,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:34:12,506 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:34:12,507 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:34:12,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:12,512 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:34:12,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:12,512 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:34:12,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:12,521 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:34:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:12,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:34:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 1224 proven. 2 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2018-10-27 05:34:13,559 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 625 proven. 175 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-10-27 05:34:14,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:14,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-10-27 05:34:14,437 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:14,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:34:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:34:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:34:14,439 INFO L87 Difference]: Start difference. First operand 19186 states and 23041 transitions. Second operand 18 states. [2018-10-27 05:34:19,089 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-27 05:34:23,517 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-27 05:34:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:34:25,121 INFO L93 Difference]: Finished difference Result 43059 states and 54723 transitions. [2018-10-27 05:34:25,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-27 05:34:25,121 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 851 [2018-10-27 05:34:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:34:25,215 INFO L225 Difference]: With dead ends: 43059 [2018-10-27 05:34:25,215 INFO L226 Difference]: Without dead ends: 24062 [2018-10-27 05:34:25,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1725 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=972, Invalid=3998, Unknown=0, NotChecked=0, Total=4970 [2018-10-27 05:34:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24062 states. [2018-10-27 05:34:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24062 to 23754. [2018-10-27 05:34:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23754 states. [2018-10-27 05:34:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23754 states to 23754 states and 29043 transitions. [2018-10-27 05:34:25,985 INFO L78 Accepts]: Start accepts. Automaton has 23754 states and 29043 transitions. Word has length 851 [2018-10-27 05:34:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:34:25,986 INFO L481 AbstractCegarLoop]: Abstraction has 23754 states and 29043 transitions. [2018-10-27 05:34:25,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:34:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 23754 states and 29043 transitions. [2018-10-27 05:34:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-10-27 05:34:26,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:34:26,035 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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] [2018-10-27 05:34:26,035 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:34:26,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:26,036 INFO L82 PathProgramCache]: Analyzing trace with hash -522691446, now seen corresponding path program 1 times [2018-10-27 05:34:26,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:34:26,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:26,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:26,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:26,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:34:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-27 05:34:26,433 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-27 05:34:26,438 INFO L168 Benchmark]: Toolchain (without parser) took 230388.53 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,439 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:34:26,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 922.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,441 INFO L168 Benchmark]: Boogie Preprocessor took 99.05 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,442 INFO L168 Benchmark]: RCFGBuilder took 3809.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,442 INFO L168 Benchmark]: TraceAbstraction took 225331.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 05:34:26,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 922.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.05 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3809.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225331.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown