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/Problem18_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:16:00,089 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:16:00,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:16:00,106 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:16:00,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:16:00,107 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:16:00,109 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:16:00,110 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:16:00,112 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:16:00,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:16:00,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:16:00,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:16:00,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:16:00,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:16:00,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:16:00,118 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:16:00,119 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:16:00,121 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:16:00,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:16:00,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:16:00,126 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:16:00,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:16:00,130 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:16:00,130 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:16:00,130 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:16:00,131 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:16:00,132 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:16:00,133 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:16:00,134 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:16:00,135 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:16:00,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:16:00,136 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:16:00,137 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:16:00,137 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:16:00,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:16:00,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:16:00,139 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 [2018-11-07 21:16:00,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:16:00,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:16:00,168 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:16:00,169 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:16:00,172 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:16:00,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:16:00,172 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:16:00,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:16:00,173 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:16:00,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:16:00,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:16:00,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:16:00,174 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:16:00,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:16:00,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:16:00,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:16:00,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:16:00,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:16:00,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:16:00,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:16:00,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:16:00,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:16:00,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:16:00,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:16:00,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:16:00,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:16:00,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:16:00,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:16:00,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:16:00,180 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:16:00,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:16:00,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:16:00,181 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:16:00,181 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:16:00,181 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:16:00,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:16:00,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:16:00,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:16:00,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:16:00,266 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:16:00,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-11-07 21:16:00,331 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca2b552/5e036942eb0646cfa38a770b5d87a324/FLAG21dba786e [2018-11-07 21:16:01,140 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:16:01,141 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-11-07 21:16:01,165 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca2b552/5e036942eb0646cfa38a770b5d87a324/FLAG21dba786e [2018-11-07 21:16:01,182 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ca2b552/5e036942eb0646cfa38a770b5d87a324 [2018-11-07 21:16:01,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:16:01,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:16:01,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:16:01,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:16:01,201 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:16:01,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:16:01" (1/1) ... [2018-11-07 21:16:01,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:01, skipping insertion in model container [2018-11-07 21:16:01,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:16:01" (1/1) ... [2018-11-07 21:16:01,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:16:01,369 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:16:02,502 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:16:02,508 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:16:02,985 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:16:03,016 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:16:03,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03 WrapperNode [2018-11-07 21:16:03,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:16:03,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:16:03,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:16:03,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:16:03,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:16:03,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:16:03,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:16:03,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:16:03,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (1/1) ... [2018-11-07 21:16:03,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:16:03,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:16:03,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:16:03,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:16:03,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (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 21:16:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:16:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:16:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:16:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:16:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:16:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:16:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:16:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:16:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:16:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:16:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:16:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:16:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:16:12,581 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:16:12,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:12 BoogieIcfgContainer [2018-11-07 21:16:12,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:16:12,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:16:12,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:16:12,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:16:12,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:16:01" (1/3) ... [2018-11-07 21:16:12,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:12, skipping insertion in model container [2018-11-07 21:16:12,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:03" (2/3) ... [2018-11-07 21:16:12,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:12, skipping insertion in model container [2018-11-07 21:16:12,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:12" (3/3) ... [2018-11-07 21:16:12,590 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50_true-unreach-call.c [2018-11-07 21:16:12,600 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:16:12,611 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:16:12,629 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:16:12,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:16:12,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:16:12,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:16:12,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:16:12,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:16:12,676 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:16:12,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:16:12,677 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:16:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:16:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-07 21:16:12,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:12,739 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:12,742 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:12,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1313897628, now seen corresponding path program 1 times [2018-11-07 21:16:12,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:12,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:12,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:12,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:12,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:13,320 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:13,522 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 21:16:13,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:13,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:16:13,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:13,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:16:13,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:16:13,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:16:13,553 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:16:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:19,880 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:16:19,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:16:19,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-11-07 21:16:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:19,915 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:16:19,915 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:16:19,927 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 21:16:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:16:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:16:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:16:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 21:16:20,080 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 70 [2018-11-07 21:16:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:20,083 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 21:16:20,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:16:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 21:16:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 21:16:20,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:20,104 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:20,105 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:20,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -574735317, now seen corresponding path program 1 times [2018-11-07 21:16:20,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:20,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:20,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:20,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:20,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:20,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:20,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:20,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:20,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:20,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:20,462 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 21:16:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:28,897 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 21:16:28,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:28,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-11-07 21:16:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:28,925 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 21:16:28,926 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 21:16:28,931 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 21:16:28,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 21:16:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 21:16:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 21:16:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 21:16:29,058 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 159 [2018-11-07 21:16:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:29,060 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 21:16:29,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 21:16:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 21:16:29,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:29,078 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:29,078 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:29,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:29,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1205378606, now seen corresponding path program 1 times [2018-11-07 21:16:29,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:29,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:29,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:29,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:29,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:29,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:29,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:29,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:29,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:29,430 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 21:16:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:34,846 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-11-07 21:16:34,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:34,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2018-11-07 21:16:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:34,873 INFO L225 Difference]: With dead ends: 6669 [2018-11-07 21:16:34,874 INFO L226 Difference]: Without dead ends: 3747 [2018-11-07 21:16:34,883 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 21:16:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-11-07 21:16:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-11-07 21:16:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-11-07 21:16:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-11-07 21:16:35,001 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 206 [2018-11-07 21:16:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:35,002 INFO L480 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-11-07 21:16:35,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-11-07 21:16:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 21:16:35,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:35,008 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:35,009 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:35,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 393503562, now seen corresponding path program 1 times [2018-11-07 21:16:35,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:35,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:35,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:35,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:35,371 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:35,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:35,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:35,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:35,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:35,798 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-11-07 21:16:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:40,860 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-11-07 21:16:40,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:40,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-11-07 21:16:40,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:40,889 INFO L225 Difference]: With dead ends: 9623 [2018-11-07 21:16:40,890 INFO L226 Difference]: Without dead ends: 5940 [2018-11-07 21:16:40,901 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 [2018-11-07 21:16:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-11-07 21:16:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-11-07 21:16:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-11-07 21:16:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-11-07 21:16:41,046 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 208 [2018-11-07 21:16:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:41,046 INFO L480 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-11-07 21:16:41,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-11-07 21:16:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 21:16:41,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:41,054 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 21:16:41,054 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:41,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1692616840, now seen corresponding path program 1 times [2018-11-07 21:16:41,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:41,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:41,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:41,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:41,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 21:16:41,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:41,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:16:41,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:41,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:16:41,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:16:41,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:16:41,344 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-11-07 21:16:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:49,685 INFO L93 Difference]: Finished difference Result 22501 states and 31632 transitions. [2018-11-07 21:16:49,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:16:49,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2018-11-07 21:16:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:49,761 INFO L225 Difference]: With dead ends: 22501 [2018-11-07 21:16:49,761 INFO L226 Difference]: Without dead ends: 16618 [2018-11-07 21:16:49,791 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 21:16:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2018-11-07 21:16:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 16618. [2018-11-07 21:16:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16618 states. [2018-11-07 21:16:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16618 states to 16618 states and 21854 transitions. [2018-11-07 21:16:50,198 INFO L78 Accepts]: Start accepts. Automaton has 16618 states and 21854 transitions. Word has length 266 [2018-11-07 21:16:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:50,199 INFO L480 AbstractCegarLoop]: Abstraction has 16618 states and 21854 transitions. [2018-11-07 21:16:50,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:16:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 16618 states and 21854 transitions. [2018-11-07 21:16:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-07 21:16:50,216 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:50,216 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:50,217 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:50,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1237035280, now seen corresponding path program 1 times [2018-11-07 21:16:50,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:50,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:50,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:50,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:50,219 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 167 proven. 61 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:16:50,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:16:50,642 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:16:50,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-11-07 21:16:50,652 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2083], [2085], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:16:50,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:16:50,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:16:51,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:16:51,526 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:16:51,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:51,575 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:16:52,365 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 78.05% of their original sizes. [2018-11-07 21:16:52,365 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:16:52,728 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-11-07 21:16:52,728 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:16:52,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:16:52,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 21:16:52,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:52,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:16:52,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:16:52,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:16:52,731 INFO L87 Difference]: Start difference. First operand 16618 states and 21854 transitions. Second operand 7 states. [2018-11-07 21:17:02,273 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:17:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:17:28,689 INFO L93 Difference]: Finished difference Result 33935 states and 44530 transitions. [2018-11-07 21:17:28,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:17:28,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2018-11-07 21:17:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:17:28,744 INFO L225 Difference]: With dead ends: 33935 [2018-11-07 21:17:28,745 INFO L226 Difference]: Without dead ends: 17323 [2018-11-07 21:17:28,793 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:17:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17323 states. [2018-11-07 21:17:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17323 to 17321. [2018-11-07 21:17:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17321 states. [2018-11-07 21:17:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 22569 transitions. [2018-11-07 21:17:29,118 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 22569 transitions. Word has length 310 [2018-11-07 21:17:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:17:29,118 INFO L480 AbstractCegarLoop]: Abstraction has 17321 states and 22569 transitions. [2018-11-07 21:17:29,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:17:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 22569 transitions. [2018-11-07 21:17:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-07 21:17:29,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:17:29,142 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:17:29,142 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:17:29,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:29,143 INFO L82 PathProgramCache]: Analyzing trace with hash 319477843, now seen corresponding path program 1 times [2018-11-07 21:17:29,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:17:29,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:29,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:17:29,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:29,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:17:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:17:29,767 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:29,964 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:30,194 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:30,615 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:17:31,031 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 21:17:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 248 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:17:32,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:17:32,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:17:32,073 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-11-07 21:17:32,073 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2083], [2085], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:17:32,082 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:17:32,082 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:17:32,509 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:17:32,509 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:17:32,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:32,551 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:17:33,588 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 78.17% of their original sizes. [2018-11-07 21:17:33,588 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:17:35,345 INFO L415 sIntCurrentIteration]: We unified 496 AI predicates to 496 [2018-11-07 21:17:35,345 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:17:35,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:17:35,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:17:35,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:17:35,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:17:35,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:17:35,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:17:35,347 INFO L87 Difference]: Start difference. First operand 17321 states and 22569 transitions. Second operand 17 states. [2018-11-07 21:18:05,469 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:18:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:18:52,237 INFO L93 Difference]: Finished difference Result 36184 states and 47004 transitions. [2018-11-07 21:18:52,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 21:18:52,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 497 [2018-11-07 21:18:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:18:52,295 INFO L225 Difference]: With dead ends: 36184 [2018-11-07 21:18:52,295 INFO L226 Difference]: Without dead ends: 17612 [2018-11-07 21:18:52,324 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 505 GetRequests, 431 SyntacticMatches, 50 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:18:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states. [2018-11-07 21:18:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 17321. [2018-11-07 21:18:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17321 states. [2018-11-07 21:18:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 22561 transitions. [2018-11-07 21:18:52,635 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 22561 transitions. Word has length 497 [2018-11-07 21:18:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:18:52,638 INFO L480 AbstractCegarLoop]: Abstraction has 17321 states and 22561 transitions. [2018-11-07 21:18:52,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:18:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 22561 transitions. [2018-11-07 21:18:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-11-07 21:18:52,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:18:52,673 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:52,674 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:18:52,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:18:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1550118632, now seen corresponding path program 1 times [2018-11-07 21:18:52,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:18:52,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:18:52,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:18:52,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:18:52,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:18:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:18:54,008 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:18:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 169 proven. 236 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-07 21:18:54,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:18:54,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:18:54,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 839 with the following transitions: [2018-11-07 21:18:54,744 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2083], [2085], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:18:54,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:18:54,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:18:55,838 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:18:55,838 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:18:55,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:18:55,852 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:18:57,303 INFO L227 lantSequenceWeakener]: Weakened 402 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 21:18:57,303 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:18:58,105 INFO L415 sIntCurrentIteration]: We unified 837 AI predicates to 837 [2018-11-07 21:18:58,105 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:18:58,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:18:58,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [8] total 37 [2018-11-07 21:18:58,106 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:18:58,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:18:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:18:58,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:18:58,109 INFO L87 Difference]: Start difference. First operand 17321 states and 22561 transitions. Second operand 31 states. Received shutdown request... [2018-11-07 21:19:35,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 21:19:35,101 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:19:35,107 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:19:35,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:19:35 BoogieIcfgContainer [2018-11-07 21:19:35,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:19:35,108 INFO L168 Benchmark]: Toolchain (without parser) took 213913.35 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -764.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,109 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:19:35,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1820.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 287.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,112 INFO L168 Benchmark]: Boogie Preprocessor took 229.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,112 INFO L168 Benchmark]: RCFGBuilder took 9046.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.2 MB). Peak memory consumption was 494.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,113 INFO L168 Benchmark]: TraceAbstraction took 202524.73 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -467.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:35,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1820.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 287.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 229.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9046.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.2 MB). Peak memory consumption was 494.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202524.73 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -467.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (17321states) and FLOYD_HOARE automaton (currently 25 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (890 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 202.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 183.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3057 SDtfs, 20218 SDslu, 1279 SDs, 0 SdLazy, 44724 SolverSat, 6392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1712 GetRequests, 1554 SyntacticMatches, 55 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17321occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9982181858989045 AbsIntWeakeningRatio, 0.05968331303288672 AbsIntAvgWeakeningVarsNumRemoved, 15.971376370280145 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 425 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2546 ConstructedInterpolants, 0 QuantifiedInterpolants, 4564193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 1129/1709 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown