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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:00:03,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:00:03,065 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:00:03,086 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:00:03,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:00:03,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:00:03,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:00:03,093 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:00:03,095 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:00:03,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:00:03,105 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:00:03,105 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:00:03,106 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:00:03,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:00:03,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:00:03,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:00:03,113 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:00:03,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:00:03,119 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:00:03,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:00:03,124 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:00:03,126 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:00:03,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:00:03,133 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:00:03,133 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:00:03,134 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:00:03,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:00:03,136 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:00:03,137 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:00:03,140 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:00:03,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:00:03,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:00:03,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:00:03,142 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:00:03,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:00:03,143 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:00:03,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:00:03,159 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:00:03,159 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:00:03,160 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:00:03,160 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:00:03,160 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:00:03,161 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:00:03,161 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:00:03,161 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:00:03,161 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:00:03,161 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:00:03,162 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:00:03,164 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:00:03,164 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:00:03,165 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:00:03,165 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:00:03,165 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:00:03,166 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:00:03,166 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:00:03,166 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:00:03,166 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:00:03,166 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:00:03,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:00:03,168 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:00:03,169 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:00:03,169 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:00:03,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:00:03,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:00:03,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:00:03,170 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:00:03,170 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:00:03,170 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:00:03,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:00:03,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:00:03,171 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:00:03,171 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:00:03,222 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:00:03,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:00:03,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:00:03,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:00:03,241 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:00:03,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-11-12 17:00:03,305 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a58b7da/783d7896a4b144dca99947686acb225e/FLAG7583f190c [2018-11-12 17:00:04,262 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:00:04,263 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-11-12 17:00:04,318 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a58b7da/783d7896a4b144dca99947686acb225e/FLAG7583f190c [2018-11-12 17:00:04,334 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a58b7da/783d7896a4b144dca99947686acb225e [2018-11-12 17:00:04,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:00:04,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:00:04,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:00:04,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:00:04,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:00:04,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:00:04" (1/1) ... [2018-11-12 17:00:04,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c173f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:04, skipping insertion in model container [2018-11-12 17:00:04,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:00:04" (1/1) ... [2018-11-12 17:00:04,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:00:04,619 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:00:06,736 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:00:06,742 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:00:07,928 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:00:07,996 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:00:07,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07 WrapperNode [2018-11-12 17:00:07,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:00:07,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:00:07,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:00:07,999 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:00:08,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:00:08,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:00:08,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:00:08,580 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:00:08,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:08,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (1/1) ... [2018-11-12 17:00:09,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:00:09,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:00:09,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:00:09,046 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:00:09,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (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 [2018-11-12 17:00:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:00:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:00:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:00:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 17:00:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 17:00:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 17:00:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 17:00:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:00:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:00:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:00:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:00:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:00:09,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:00:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:00:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:00:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:00:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:00:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:00:09,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:00:25,356 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:00:25,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:00:25 BoogieIcfgContainer [2018-11-12 17:00:25,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:00:25,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:00:25,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:00:25,362 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:00:25,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:00:04" (1/3) ... [2018-11-12 17:00:25,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79824194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:00:25, skipping insertion in model container [2018-11-12 17:00:25,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:00:07" (2/3) ... [2018-11-12 17:00:25,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79824194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:00:25, skipping insertion in model container [2018-11-12 17:00:25,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:00:25" (3/3) ... [2018-11-12 17:00:25,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label17_false-unreach-call.c [2018-11-12 17:00:25,376 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:00:25,389 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:00:25,407 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:00:25,463 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:00:25,463 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:00:25,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:00:25,464 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:00:25,464 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:00:25,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:00:25,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:00:25,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:00:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 17:00:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-12 17:00:25,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:25,525 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:00:25,528 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:25,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash -780886590, now seen corresponding path program 1 times [2018-11-12 17:00:25,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:25,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:25,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:25,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:25,591 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:25,958 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:00:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:00:26,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:00:26,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:00:26,062 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:26,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:00:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:00:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:00:26,091 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-12 17:00:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:38,341 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-12 17:00:38,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:00:38,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-12 17:00:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:38,520 INFO L225 Difference]: With dead ends: 4995 [2018-11-12 17:00:38,520 INFO L226 Difference]: Without dead ends: 3215 [2018-11-12 17:00:38,538 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 [2018-11-12 17:00:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-12 17:00:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-12 17:00:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-12 17:00:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-12 17:00:38,745 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 17 [2018-11-12 17:00:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:38,746 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-12 17:00:38,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:00:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-12 17:00:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-12 17:00:38,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:38,753 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:00:38,753 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:38,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:38,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1798896126, now seen corresponding path program 1 times [2018-11-12 17:00:38,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:38,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:38,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:38,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:38,756 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:00:39,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:00:39,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:00:39,190 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:39,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:00:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:00:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:00:39,193 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-12 17:01:09,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:09,576 INFO L93 Difference]: Finished difference Result 12248 states and 22704 transitions. [2018-11-12 17:01:09,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 17:01:09,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-12 17:01:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:09,622 INFO L225 Difference]: With dead ends: 12248 [2018-11-12 17:01:09,622 INFO L226 Difference]: Without dead ends: 9041 [2018-11-12 17:01:09,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:01:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2018-11-12 17:01:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 8960. [2018-11-12 17:01:09,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8960 states. [2018-11-12 17:01:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8960 states to 8960 states and 13239 transitions. [2018-11-12 17:01:09,885 INFO L78 Accepts]: Start accepts. Automaton has 8960 states and 13239 transitions. Word has length 91 [2018-11-12 17:01:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:09,887 INFO L480 AbstractCegarLoop]: Abstraction has 8960 states and 13239 transitions. [2018-11-12 17:01:09,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:01:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8960 states and 13239 transitions. [2018-11-12 17:01:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-12 17:01:09,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:09,896 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:01:09,896 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:09,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash 242282510, now seen corresponding path program 1 times [2018-11-12 17:01:09,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:09,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:09,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:09,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:09,899 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:01:10,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:01:10,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:01:10,229 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:10,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:01:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:01:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:01:10,231 INFO L87 Difference]: Start difference. First operand 8960 states and 13239 transitions. Second operand 6 states. [2018-11-12 17:01:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:25,799 INFO L93 Difference]: Finished difference Result 27213 states and 40746 transitions. [2018-11-12 17:01:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:01:25,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-12 17:01:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:25,873 INFO L225 Difference]: With dead ends: 27213 [2018-11-12 17:01:25,874 INFO L226 Difference]: Without dead ends: 18259 [2018-11-12 17:01:25,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:01:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18259 states. [2018-11-12 17:01:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18259 to 17982. [2018-11-12 17:01:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17982 states. [2018-11-12 17:01:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17982 states to 17982 states and 26015 transitions. [2018-11-12 17:01:26,292 INFO L78 Accepts]: Start accepts. Automaton has 17982 states and 26015 transitions. Word has length 99 [2018-11-12 17:01:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:26,293 INFO L480 AbstractCegarLoop]: Abstraction has 17982 states and 26015 transitions. [2018-11-12 17:01:26,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:01:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 17982 states and 26015 transitions. [2018-11-12 17:01:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-12 17:01:26,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:26,296 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:01:26,297 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:26,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash -801426972, now seen corresponding path program 1 times [2018-11-12 17:01:26,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:26,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:26,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:26,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:26,299 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:01:26,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:01:26,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:01:26,614 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:26,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:01:26,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:01:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:01:26,617 INFO L87 Difference]: Start difference. First operand 17982 states and 26015 transitions. Second operand 5 states. [2018-11-12 17:01:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:43,784 INFO L93 Difference]: Finished difference Result 55206 states and 81575 transitions. [2018-11-12 17:01:43,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 17:01:43,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-12 17:01:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:43,922 INFO L225 Difference]: With dead ends: 55206 [2018-11-12 17:01:43,923 INFO L226 Difference]: Without dead ends: 37230 [2018-11-12 17:01:43,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:01:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37230 states. [2018-11-12 17:01:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37230 to 36296. [2018-11-12 17:01:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36296 states. [2018-11-12 17:01:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36296 states to 36296 states and 47823 transitions. [2018-11-12 17:01:44,743 INFO L78 Accepts]: Start accepts. Automaton has 36296 states and 47823 transitions. Word has length 119 [2018-11-12 17:01:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:44,744 INFO L480 AbstractCegarLoop]: Abstraction has 36296 states and 47823 transitions. [2018-11-12 17:01:44,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:01:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 36296 states and 47823 transitions. [2018-11-12 17:01:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-12 17:01:44,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:44,748 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:01:44,749 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:44,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1894482663, now seen corresponding path program 1 times [2018-11-12 17:01:44,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:44,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:44,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:44,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:44,751 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:45,006 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:01:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:01:45,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:01:45,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:01:45,399 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:45,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:01:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:01:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:01:45,401 INFO L87 Difference]: Start difference. First operand 36296 states and 47823 transitions. Second operand 6 states. [2018-11-12 17:01:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:59,093 INFO L93 Difference]: Finished difference Result 86377 states and 117279 transitions. [2018-11-12 17:01:59,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:01:59,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-11-12 17:01:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:59,260 INFO L225 Difference]: With dead ends: 86377 [2018-11-12 17:01:59,260 INFO L226 Difference]: Without dead ends: 50087 [2018-11-12 17:01:59,323 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:01:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50087 states. [2018-11-12 17:02:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50087 to 49189. [2018-11-12 17:02:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49189 states. [2018-11-12 17:02:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49189 states to 49189 states and 63619 transitions. [2018-11-12 17:02:00,200 INFO L78 Accepts]: Start accepts. Automaton has 49189 states and 63619 transitions. Word has length 182 [2018-11-12 17:02:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:02:00,201 INFO L480 AbstractCegarLoop]: Abstraction has 49189 states and 63619 transitions. [2018-11-12 17:02:00,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:02:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 49189 states and 63619 transitions. [2018-11-12 17:02:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-12 17:02:00,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:00,206 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:02:00,206 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:00,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash -99560630, now seen corresponding path program 1 times [2018-11-12 17:02:00,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:00,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:00,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:00,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:00,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:02:00,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:02:00,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:02:00,503 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:00,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:02:00,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:02:00,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:02:00,504 INFO L87 Difference]: Start difference. First operand 49189 states and 63619 transitions. Second operand 4 states. [2018-11-12 17:02:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:02:16,574 INFO L93 Difference]: Finished difference Result 178140 states and 247819 transitions. [2018-11-12 17:02:16,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:02:16,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-11-12 17:02:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:02:17,610 INFO L225 Difference]: With dead ends: 178140 [2018-11-12 17:02:17,610 INFO L226 Difference]: Without dead ends: 128957 [2018-11-12 17:02:17,750 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 [2018-11-12 17:02:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128957 states. [2018-11-12 17:02:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128957 to 128519. [2018-11-12 17:02:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128519 states. [2018-11-12 17:02:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128519 states to 128519 states and 170164 transitions. [2018-11-12 17:02:20,144 INFO L78 Accepts]: Start accepts. Automaton has 128519 states and 170164 transitions. Word has length 229 [2018-11-12 17:02:20,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:02:20,145 INFO L480 AbstractCegarLoop]: Abstraction has 128519 states and 170164 transitions. [2018-11-12 17:02:20,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:02:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 128519 states and 170164 transitions. [2018-11-12 17:02:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-11-12 17:02:20,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:20,206 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 17:02:20,206 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:20,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2113099186, now seen corresponding path program 1 times [2018-11-12 17:02:20,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:20,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:20,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:20,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:20,209 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 275 proven. 283 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-11-12 17:02:21,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:02:21,746 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:02:21,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 737 with the following transitions: [2018-11-12 17:02:21,750 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5262], [5264], [5267], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5897], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:02:21,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:02:21,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:02:22,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:02:22,684 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:02:22,686 INFO L272 AbstractInterpreter]: Visited 223 different actions 223 times. Never merged. Never widened. Performed 2604 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2604 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 17:02:22,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:22,732 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:02:24,301 INFO L227 lantSequenceWeakener]: Weakened 716 states. On average, predicates are now at 74.99% of their original sizes. [2018-11-12 17:02:24,301 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:02:24,707 INFO L415 sIntCurrentIteration]: We unified 735 AI predicates to 735 [2018-11-12 17:02:24,707 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:02:24,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:02:24,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 17:02:24,709 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:24,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:02:24,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:02:24,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:02:24,711 INFO L87 Difference]: Start difference. First operand 128519 states and 170164 transitions. Second operand 7 states. [2018-11-12 17:03:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:03:11,902 INFO L93 Difference]: Finished difference Result 258424 states and 341807 transitions. [2018-11-12 17:03:11,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:03:11,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 736 [2018-11-12 17:03:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:03:12,266 INFO L225 Difference]: With dead ends: 258424 [2018-11-12 17:03:12,266 INFO L226 Difference]: Without dead ends: 129911 [2018-11-12 17:03:12,504 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:03:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129911 states. [2018-11-12 17:03:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129911 to 129909. [2018-11-12 17:03:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129909 states. [2018-11-12 17:03:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129909 states to 129909 states and 171570 transitions. [2018-11-12 17:03:15,599 INFO L78 Accepts]: Start accepts. Automaton has 129909 states and 171570 transitions. Word has length 736 [2018-11-12 17:03:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:03:15,600 INFO L480 AbstractCegarLoop]: Abstraction has 129909 states and 171570 transitions. [2018-11-12 17:03:15,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:03:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 129909 states and 171570 transitions. [2018-11-12 17:03:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-11-12 17:03:15,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:03:15,676 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:03:15,677 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:03:15,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:03:15,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2087918290, now seen corresponding path program 1 times [2018-11-12 17:03:15,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:03:15,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:15,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:03:15,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:15,679 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:03:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:03:17,218 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 17:03:17,523 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 29 Received shutdown request... [2018-11-12 17:03:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 87 proven. 1172 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2018-11-12 17:03:28,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:03:28,845 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:03:28,845 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 977 with the following transitions: [2018-11-12 17:03:28,846 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5262], [5264], [5267], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5897], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:03:28,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:03:28,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:03:28,855 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 17:03:28,856 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 17:03:28,857 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 17:03:28,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:03:28,857 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:03:28,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:03:28,868 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:03:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:03:29,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:03:29,269 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 17:03:29,470 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:03:29,471 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:03:29,477 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:03:29,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:03:29 BoogieIcfgContainer [2018-11-12 17:03:29,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:03:29,479 INFO L168 Benchmark]: Toolchain (without parser) took 205133.00 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,480 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:03:29,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3649.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 977.5 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 581.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.8 MB). Free memory was 977.5 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,483 INFO L168 Benchmark]: Boogie Preprocessor took 465.55 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: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,485 INFO L168 Benchmark]: RCFGBuilder took 16311.34 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 456.8 MB). Peak memory consumption was 685.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,485 INFO L168 Benchmark]: TraceAbstraction took 184119.26 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-12 17:03:29,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3649.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 977.5 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 581.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.8 MB). Free memory was 977.5 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 465.55 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: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16311.34 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 456.8 MB). Peak memory consumption was 685.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 184119.26 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 977 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 184.0s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 154.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5429 SDtfs, 33085 SDslu, 4329 SDs, 0 SdLazy, 54833 SolverSat, 13061 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 785 GetRequests, 746 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129909occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9986614144999236 AbsIntWeakeningRatio, 0.06394557823129252 AbsIntAvgWeakeningVarsNumRemoved, 19.35238095238095 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 2632 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1473 NumberOfCodeBlocks, 1473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1466 ConstructedInterpolants, 0 QuantifiedInterpolants, 1918481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 882/1165 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown