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_label53_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:03:57,081 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:03:57,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:03:57,096 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:03:57,096 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:03:57,097 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:03:57,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:03:57,100 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:03:57,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:03:57,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:03:57,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:03:57,104 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:03:57,105 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:03:57,106 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:03:57,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:03:57,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:03:57,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:03:57,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:03:57,113 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:03:57,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:03:57,116 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:03:57,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:03:57,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:03:57,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:03:57,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:03:57,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:03:57,122 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:03:57,123 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:03:57,124 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:03:57,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:03:57,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:03:57,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:03:57,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:03:57,127 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:03:57,128 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:03:57,129 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:03:57,129 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 17:03:57,153 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:03:57,153 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:03:57,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:03:57,154 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:03:57,157 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:03:57,157 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:03:57,158 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:03:57,158 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:03:57,158 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:03:57,158 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:03:57,158 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:03:57,159 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:03:57,159 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:03:57,161 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:03:57,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:03:57,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:03:57,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:03:57,162 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:03:57,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:03:57,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:03:57,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:03:57,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:03:57,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:03:57,164 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:03:57,164 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:03:57,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:03:57,165 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:03:57,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:03:57,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:03:57,165 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:03:57,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:03:57,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:03:57,166 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:03:57,166 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:03:57,167 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:03:57,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:03:57,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:03:57,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:03:57,243 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:03:57,243 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:03:57,244 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label53_false-unreach-call.c [2018-11-12 17:03:57,313 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbd9b098/662c8655f0424b5bb92d5bdb30e871e9/FLAG6414e97ae [2018-11-12 17:03:58,264 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:03:58,265 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label53_false-unreach-call.c [2018-11-12 17:03:58,314 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbd9b098/662c8655f0424b5bb92d5bdb30e871e9/FLAG6414e97ae [2018-11-12 17:03:58,332 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbd9b098/662c8655f0424b5bb92d5bdb30e871e9 [2018-11-12 17:03:58,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:03:58,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:03:58,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:03:58,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:03:58,356 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:03:58,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:03:58" (1/1) ... [2018-11-12 17:03:58,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:58, skipping insertion in model container [2018-11-12 17:03:58,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:03:58" (1/1) ... [2018-11-12 17:03:58,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:03:58,626 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:04:00,634 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:04:00,640 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:04:01,779 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:04:01,854 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:04:01,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01 WrapperNode [2018-11-12 17:04:01,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:04:01,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:04:01,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:04:01,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:04:02,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:04:02,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:04:02,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:04:02,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:04:02,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (1/1) ... [2018-11-12 17:04:02,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:04:02,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:04:02,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:04:02,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:04:02,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (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 17:04:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:04:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:04:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:04:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 17:04:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 17:04:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 17:04:02,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 17:04:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:04:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:04:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:04:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:04:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:04:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:04:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:04:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:04:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:04:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:04:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:04:02,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:04:17,297 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:04:17,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:04:17 BoogieIcfgContainer [2018-11-12 17:04:17,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:04:17,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:04:17,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:04:17,303 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:04:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:03:58" (1/3) ... [2018-11-12 17:04:17,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33173935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:04:17, skipping insertion in model container [2018-11-12 17:04:17,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:04:01" (2/3) ... [2018-11-12 17:04:17,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33173935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:04:17, skipping insertion in model container [2018-11-12 17:04:17,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:04:17" (3/3) ... [2018-11-12 17:04:17,307 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label53_false-unreach-call.c [2018-11-12 17:04:17,317 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:04:17,327 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:04:17,345 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:04:17,400 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:04:17,401 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:04:17,401 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:04:17,401 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:04:17,401 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:04:17,401 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:04:17,401 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:04:17,402 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:04:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 17:04:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 17:04:17,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:17,463 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:04:17,466 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:17,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1562328788, now seen corresponding path program 1 times [2018-11-12 17:04:17,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:17,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:17,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:17,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:17,535 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:17,917 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 17:04:17,926 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 17:04:17,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:04:17,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:04:17,932 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:17,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:04:17,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:04:17,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:04:17,960 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-12 17:04:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:04:38,345 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-11-12 17:04:38,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:04:38,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-12 17:04:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:04:38,406 INFO L225 Difference]: With dead ends: 6510 [2018-11-12 17:04:38,406 INFO L226 Difference]: Without dead ends: 4726 [2018-11-12 17:04:38,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:04:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-11-12 17:04:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-11-12 17:04:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-11-12 17:04:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-11-12 17:04:38,694 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 18 [2018-11-12 17:04:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:04:38,695 INFO L480 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-11-12 17:04:38,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:04:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-11-12 17:04:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-12 17:04:38,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:38,701 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:04:38,701 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:38,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:38,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1283828407, now seen corresponding path program 1 times [2018-11-12 17:04:38,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:38,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:38,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:38,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:38,704 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:39,096 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:04:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:04:39,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:04:39,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:04:39,440 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:39,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:04:39,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:04:39,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:04:39,445 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-11-12 17:05:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:04,372 INFO L93 Difference]: Finished difference Result 17857 states and 28865 transitions. [2018-11-12 17:05:04,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:05:04,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-11-12 17:05:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:04,438 INFO L225 Difference]: With dead ends: 17857 [2018-11-12 17:05:04,438 INFO L226 Difference]: Without dead ends: 13176 [2018-11-12 17:05:04,460 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:05:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-11-12 17:05:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-11-12 17:05:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-11-12 17:05:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18702 transitions. [2018-11-12 17:05:04,914 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18702 transitions. Word has length 90 [2018-11-12 17:05:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:04,915 INFO L480 AbstractCegarLoop]: Abstraction has 13105 states and 18702 transitions. [2018-11-12 17:05:04,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:05:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18702 transitions. [2018-11-12 17:05:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-12 17:05:04,918 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:04,918 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:05:04,919 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:04,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1789601376, now seen corresponding path program 1 times [2018-11-12 17:05:04,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:04,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:04,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:04,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:04,921 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:05,215 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:05:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:05,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:05,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:05:05,261 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:05,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:05:05,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:05:05,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:05:05,262 INFO L87 Difference]: Start difference. First operand 13105 states and 18702 transitions. Second operand 6 states. [2018-11-12 17:05:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:25,611 INFO L93 Difference]: Finished difference Result 43695 states and 64626 transitions. [2018-11-12 17:05:25,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:05:25,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-11-12 17:05:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:25,749 INFO L225 Difference]: With dead ends: 43695 [2018-11-12 17:05:25,749 INFO L226 Difference]: Without dead ends: 30596 [2018-11-12 17:05:25,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:05:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2018-11-12 17:05:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 30433. [2018-11-12 17:05:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30433 states. [2018-11-12 17:05:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30433 states to 30433 states and 42880 transitions. [2018-11-12 17:05:26,433 INFO L78 Accepts]: Start accepts. Automaton has 30433 states and 42880 transitions. Word has length 92 [2018-11-12 17:05:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:26,433 INFO L480 AbstractCegarLoop]: Abstraction has 30433 states and 42880 transitions. [2018-11-12 17:05:26,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:05:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 30433 states and 42880 transitions. [2018-11-12 17:05:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-12 17:05:26,436 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:26,436 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:05:26,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:26,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 130074759, now seen corresponding path program 1 times [2018-11-12 17:05:26,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:26,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:26,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:26,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:26,438 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:26,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:26,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:05:26,916 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:26,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:05:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:05:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:05:26,917 INFO L87 Difference]: Start difference. First operand 30433 states and 42880 transitions. Second operand 6 states. [2018-11-12 17:05:27,373 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-12 17:05:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:44,848 INFO L93 Difference]: Finished difference Result 92577 states and 135297 transitions. [2018-11-12 17:05:44,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:05:44,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-12 17:05:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:45,022 INFO L225 Difference]: With dead ends: 92577 [2018-11-12 17:05:45,022 INFO L226 Difference]: Without dead ends: 62150 [2018-11-12 17:05:45,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:05:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62150 states. [2018-11-12 17:05:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62150 to 61713. [2018-11-12 17:05:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61713 states. [2018-11-12 17:05:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61713 states to 61713 states and 86780 transitions. [2018-11-12 17:05:46,251 INFO L78 Accepts]: Start accepts. Automaton has 61713 states and 86780 transitions. Word has length 100 [2018-11-12 17:05:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:46,252 INFO L480 AbstractCegarLoop]: Abstraction has 61713 states and 86780 transitions. [2018-11-12 17:05:46,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:05:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 61713 states and 86780 transitions. [2018-11-12 17:05:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-12 17:05:46,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:46,255 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:05:46,255 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:46,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:46,255 INFO L82 PathProgramCache]: Analyzing trace with hash 866356209, now seen corresponding path program 1 times [2018-11-12 17:05:46,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:46,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:46,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:46,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:46,257 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:46,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:46,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:05:46,476 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:05:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:05:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:05:46,477 INFO L87 Difference]: Start difference. First operand 61713 states and 86780 transitions. Second operand 5 states. [2018-11-12 17:06:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:05,326 INFO L93 Difference]: Finished difference Result 187058 states and 273244 transitions. [2018-11-12 17:06:05,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 17:06:05,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-12 17:06:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:05,809 INFO L225 Difference]: With dead ends: 187058 [2018-11-12 17:06:05,810 INFO L226 Difference]: Without dead ends: 125351 [2018-11-12 17:06:05,976 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:06:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125351 states. [2018-11-12 17:06:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125351 to 124086. [2018-11-12 17:06:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124086 states. [2018-11-12 17:06:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124086 states to 124086 states and 162806 transitions. [2018-11-12 17:06:08,777 INFO L78 Accepts]: Start accepts. Automaton has 124086 states and 162806 transitions. Word has length 120 [2018-11-12 17:06:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:08,777 INFO L480 AbstractCegarLoop]: Abstraction has 124086 states and 162806 transitions. [2018-11-12 17:06:08,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:06:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 124086 states and 162806 transitions. [2018-11-12 17:06:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-12 17:06:08,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:08,782 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:06:08,782 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:08,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:08,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1745504638, now seen corresponding path program 1 times [2018-11-12 17:06:08,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:08,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:08,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:08,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:08,788 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:09,131 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:06:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:09,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:06:09,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:06:09,532 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:09,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:06:09,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:06:09,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:06:09,535 INFO L87 Difference]: Start difference. First operand 124086 states and 162806 transitions. Second operand 6 states. [2018-11-12 17:06:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:26,170 INFO L93 Difference]: Finished difference Result 280352 states and 387081 transitions. [2018-11-12 17:06:26,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:06:26,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-11-12 17:06:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:26,772 INFO L225 Difference]: With dead ends: 280352 [2018-11-12 17:06:26,772 INFO L226 Difference]: Without dead ends: 156272 [2018-11-12 17:06:26,966 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:06:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156272 states. [2018-11-12 17:06:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156272 to 155340. [2018-11-12 17:06:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155340 states. [2018-11-12 17:06:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155340 states to 155340 states and 204834 transitions. [2018-11-12 17:06:30,346 INFO L78 Accepts]: Start accepts. Automaton has 155340 states and 204834 transitions. Word has length 183 [2018-11-12 17:06:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:30,347 INFO L480 AbstractCegarLoop]: Abstraction has 155340 states and 204834 transitions. [2018-11-12 17:06:30,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:06:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 155340 states and 204834 transitions. [2018-11-12 17:06:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-11-12 17:06:30,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:30,374 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 17:06:30,375 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:30,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1819288290, now seen corresponding path program 1 times [2018-11-12 17:06:30,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:30,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:30,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:30,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:30,377 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:31,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:06:31,188 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:06:31,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 826 with the following transitions: [2018-11-12 17:06:31,193 INFO L202 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5254], [5256], [5258], [5266], [5270], [5272], [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], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [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], [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], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6833], [6834], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:06:31,284 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:06:31,284 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:06:32,173 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:06:32,932 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:06:32,934 INFO L272 AbstractInterpreter]: Visited 592 different actions 592 times. Never merged. Never widened. Performed 7567 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7567 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 17:06:32,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:32,980 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:06:35,955 INFO L227 lantSequenceWeakener]: Weakened 807 states. On average, predicates are now at 74.98% of their original sizes. [2018-11-12 17:06:35,955 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:06:36,579 INFO L415 sIntCurrentIteration]: We unified 824 AI predicates to 824 [2018-11-12 17:06:36,580 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:06:36,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:06:36,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-12 17:06:36,581 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:36,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 17:06:36,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 17:06:36,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-12 17:06:36,583 INFO L87 Difference]: Start difference. First operand 155340 states and 204834 transitions. Second operand 13 states. Received shutdown request... [2018-11-12 17:07:33,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 17:07:33,554 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:07:33,559 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:07:33,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:07:33 BoogieIcfgContainer [2018-11-12 17:07:33,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:07:33,561 INFO L168 Benchmark]: Toolchain (without parser) took 215215.10 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 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 905.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,562 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-12 17:07:33,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3506.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 520.29 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,564 INFO L168 Benchmark]: Boogie Preprocessor took 384.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,565 INFO L168 Benchmark]: RCFGBuilder took 14536.63 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 140.5 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 521.2 MB). Peak memory consumption was 661.7 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,566 INFO L168 Benchmark]: TraceAbstraction took 196260.92 ms. Allocated memory was 2.6 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 4.2 GB in the end (delta: -2.4 GB). Peak memory consumption was 220.7 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:33,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3506.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 520.29 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 384.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14536.63 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 140.5 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 521.2 MB). Peak memory consumption was 661.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 196260.92 ms. Allocated memory was 2.6 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 4.2 GB in the end (delta: -2.4 GB). Peak memory consumption was 220.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (155340states) and FLOYD_HOARE automaton (currently 13 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (77878 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 196.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4966 SDtfs, 43863 SDslu, 4997 SDs, 0 SdLazy, 61237 SolverSat, 13965 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 117.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 885 GetRequests, 829 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155340occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9992193196208603 AbsIntWeakeningRatio, 0.044902912621359224 AbsIntAvgWeakeningVarsNumRemoved, 19.50728155339806 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 2907 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1428 NumberOfCodeBlocks, 1428 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1421 ConstructedInterpolants, 0 QuantifiedInterpolants, 1618022 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 287/289 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown