java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:13:08,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:13:08,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:13:08,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:13:08,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:13:08,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:13:08,113 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:13:08,115 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:13:08,117 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:13:08,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:13:08,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:13:08,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:13:08,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:13:08,121 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:13:08,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:13:08,127 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:13:08,128 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:13:08,130 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:13:08,132 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:13:08,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:13:08,142 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:13:08,145 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:13:08,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:13:08,148 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:13:08,149 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:13:08,150 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:13:08,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:13:08,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:13:08,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:13:08,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:13:08,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:13:08,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:13:08,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:13:08,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:13:08,166 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:13:08,167 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:13:08,168 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:13:08,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:13:08,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:13:08,188 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:13:08,189 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:13:08,189 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:13:08,189 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:13:08,189 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:13:08,189 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:13:08,190 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:13:08,190 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:13:08,190 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:13:08,190 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:13:08,190 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:13:08,191 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:13:08,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:13:08,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:13:08,192 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:13:08,192 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:13:08,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:13:08,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:13:08,193 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:13:08,193 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:13:08,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:13:08,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:13:08,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:13:08,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:13:08,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:13:08,194 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:13:08,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:13:08,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:13:08,195 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:13:08,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:13:08,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:13:08,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:13:08,195 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:13:08,196 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:13:08,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:13:08,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:13:08,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:13:08,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:13:08,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:13:08,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-11-07 06:13:08,341 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13150467b/b93e38926d6841ed934d5c570845b4f8/FLAG9641edaad [2018-11-07 06:13:09,142 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:13:09,143 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-11-07 06:13:09,189 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13150467b/b93e38926d6841ed934d5c570845b4f8/FLAG9641edaad [2018-11-07 06:13:09,211 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13150467b/b93e38926d6841ed934d5c570845b4f8 [2018-11-07 06:13:09,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:13:09,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:13:09,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:13:09,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:13:09,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:13:09,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:13:09" (1/1) ... [2018-11-07 06:13:09,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:09, skipping insertion in model container [2018-11-07 06:13:09,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:13:09" (1/1) ... [2018-11-07 06:13:09,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:13:09,458 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:13:11,047 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:13:11,055 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:13:11,898 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:13:11,941 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:13:11,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11 WrapperNode [2018-11-07 06:13:11,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:13:11,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:13:11,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:13:11,944 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:13:11,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:13:12,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:13:12,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:13:12,342 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:13:12,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... [2018-11-07 06:13:12,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:13:12,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:13:12,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:13:12,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:13:12,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:13:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:13:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:13:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:13:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 06:13:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 06:13:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:13:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:13:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:13:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:13:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:13:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:13:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:13:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:13:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:13:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:13:23,319 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:13:23,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:23 BoogieIcfgContainer [2018-11-07 06:13:23,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:13:23,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:13:23,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:13:23,325 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:13:23,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:13:09" (1/3) ... [2018-11-07 06:13:23,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:23, skipping insertion in model container [2018-11-07 06:13:23,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:13:11" (2/3) ... [2018-11-07 06:13:23,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:23, skipping insertion in model container [2018-11-07 06:13:23,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:23" (3/3) ... [2018-11-07 06:13:23,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label04_false-unreach-call.c [2018-11-07 06:13:23,339 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:13:23,349 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:13:23,368 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:13:23,432 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:13:23,432 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:13:23,432 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:13:23,432 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:13:23,432 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:13:23,433 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:13:23,433 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:13:23,433 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:13:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 06:13:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 06:13:23,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:13:23,486 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] [2018-11-07 06:13:23,489 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:13:23,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:13:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1342939469, now seen corresponding path program 1 times [2018-11-07 06:13:23,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:13:23,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:23,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:13:23,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:23,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:13:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:13:23,947 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:13:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:13:24,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:13:24,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:13:24,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:13:24,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:13:24,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:13:24,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:13:24,072 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 06:13:32,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:13:32,349 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 06:13:32,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:13:32,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-07 06:13:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:13:32,385 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 06:13:32,385 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 06:13:32,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:13:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 06:13:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 06:13:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 06:13:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 06:13:32,574 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 23 [2018-11-07 06:13:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:13:32,575 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 06:13:32,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:13:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 06:13:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 06:13:32,584 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:13:32,585 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:13:32,585 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:13:32,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:13:32,586 INFO L82 PathProgramCache]: Analyzing trace with hash 555017698, now seen corresponding path program 1 times [2018-11-07 06:13:32,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:13:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:32,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:13:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:32,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:13:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:13:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:13:32,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:13:32,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:13:32,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:13:32,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:13:32,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:13:32,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:13:32,927 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 06:13:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:13:47,794 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 06:13:47,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:13:47,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-11-07 06:13:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:13:47,836 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 06:13:47,837 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 06:13:47,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:13:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 06:13:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 06:13:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 06:13:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 06:13:47,977 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 99 [2018-11-07 06:13:47,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:13:47,979 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 06:13:47,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:13:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 06:13:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 06:13:47,987 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:13:47,988 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:13:47,988 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:13:47,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:13:47,989 INFO L82 PathProgramCache]: Analyzing trace with hash 684637502, now seen corresponding path program 1 times [2018-11-07 06:13:47,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:13:47,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:47,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:13:47,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:13:47,992 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:13:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:13:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:13:48,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:13:48,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:13:48,263 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:13:48,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:13:48,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:13:48,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:13:48,264 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 06:14:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:14:04,332 INFO L93 Difference]: Finished difference Result 13645 states and 21724 transitions. [2018-11-07 06:14:04,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:14:04,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-11-07 06:14:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:14:04,400 INFO L225 Difference]: With dead ends: 13645 [2018-11-07 06:14:04,401 INFO L226 Difference]: Without dead ends: 9969 [2018-11-07 06:14:04,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:14:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2018-11-07 06:14:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9779. [2018-11-07 06:14:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9779 states. [2018-11-07 06:14:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 14476 transitions. [2018-11-07 06:14:04,715 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 14476 transitions. Word has length 113 [2018-11-07 06:14:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:14:04,716 INFO L480 AbstractCegarLoop]: Abstraction has 9779 states and 14476 transitions. [2018-11-07 06:14:04,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:14:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 14476 transitions. [2018-11-07 06:14:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 06:14:04,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:14:04,732 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:14:04,733 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:14:04,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:14:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1575492386, now seen corresponding path program 1 times [2018-11-07 06:14:04,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:14:04,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:04,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:14:04,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:04,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:14:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:14:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:14:05,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:14:05,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:14:05,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:14:05,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:14:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:14:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:14:05,091 INFO L87 Difference]: Start difference. First operand 9779 states and 14476 transitions. Second operand 6 states. [2018-11-07 06:14:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:14:17,098 INFO L93 Difference]: Finished difference Result 34106 states and 53595 transitions. [2018-11-07 06:14:17,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:14:17,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 06:14:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:14:17,236 INFO L225 Difference]: With dead ends: 34106 [2018-11-07 06:14:17,236 INFO L226 Difference]: Without dead ends: 24333 [2018-11-07 06:14:17,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:14:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24333 states. [2018-11-07 06:14:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24333 to 24112. [2018-11-07 06:14:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24112 states. [2018-11-07 06:14:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24112 states to 24112 states and 33946 transitions. [2018-11-07 06:14:17,979 INFO L78 Accepts]: Start accepts. Automaton has 24112 states and 33946 transitions. Word has length 131 [2018-11-07 06:14:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:14:17,980 INFO L480 AbstractCegarLoop]: Abstraction has 24112 states and 33946 transitions. [2018-11-07 06:14:17,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:14:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24112 states and 33946 transitions. [2018-11-07 06:14:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 06:14:17,984 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:14:17,985 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:14:17,985 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:14:17,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:14:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1082707378, now seen corresponding path program 1 times [2018-11-07 06:14:17,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:14:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:17,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:14:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:17,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:14:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:14:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:14:18,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:14:18,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:14:18,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:14:18,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:14:18,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:14:18,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:14:18,231 INFO L87 Difference]: Start difference. First operand 24112 states and 33946 transitions. Second operand 4 states. [2018-11-07 06:14:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:14:29,062 INFO L93 Difference]: Finished difference Result 66550 states and 99676 transitions. [2018-11-07 06:14:29,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:14:29,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-07 06:14:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:14:29,246 INFO L225 Difference]: With dead ends: 66550 [2018-11-07 06:14:29,246 INFO L226 Difference]: Without dead ends: 42444 [2018-11-07 06:14:29,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:14:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42444 states. [2018-11-07 06:14:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42444 to 42389. [2018-11-07 06:14:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42389 states. [2018-11-07 06:14:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 59714 transitions. [2018-11-07 06:14:30,331 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 59714 transitions. Word has length 139 [2018-11-07 06:14:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:14:30,332 INFO L480 AbstractCegarLoop]: Abstraction has 42389 states and 59714 transitions. [2018-11-07 06:14:30,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:14:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 59714 transitions. [2018-11-07 06:14:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 06:14:30,362 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:14:30,362 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 06:14:30,363 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:14:30,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:14:30,363 INFO L82 PathProgramCache]: Analyzing trace with hash 859998952, now seen corresponding path program 1 times [2018-11-07 06:14:30,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:14:30,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:30,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:14:30,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:14:30,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:14:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:14:30,993 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-11-07 06:14:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 06:14:31,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:14:31,256 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:14:31,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 06:14:31,259 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2711], [2713], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 06:14:31,322 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:14:31,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:14:35,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:14:35,423 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 06:14:35,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:14:35,465 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:14:38,980 INFO L227 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 70.85% of their original sizes. [2018-11-07 06:14:38,980 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:14:39,232 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 06:14:39,233 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:14:39,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:14:39,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 06:14:39,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:14:39,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:14:39,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:14:39,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:14:39,239 INFO L87 Difference]: Start difference. First operand 42389 states and 59714 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown