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_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:19:38,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:19:38,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:19:38,057 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:19:38,058 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:19:38,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:19:38,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:19:38,063 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:19:38,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:19:38,066 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:19:38,067 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:19:38,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:19:38,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:19:38,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:19:38,070 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:19:38,071 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:19:38,072 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:19:38,074 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:19:38,076 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:19:38,077 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:19:38,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:19:38,085 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:19:38,091 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:19:38,092 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:19:38,092 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:19:38,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:19:38,097 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:19:38,098 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:19:38,099 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:19:38,100 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:19:38,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:19:38,101 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:19:38,104 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:19:38,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:19:38,105 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:19:38,106 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:19:38,106 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 21:19:38,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:19:38,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:19:38,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:19:38,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:19:38,130 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:19:38,130 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:19:38,130 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:19:38,131 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:19:38,132 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:19:38,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:19:38,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:19:38,135 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:19:38,135 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:19:38,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:19:38,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:19:38,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:19:38,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:19:38,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:19:38,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:19:38,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:19:38,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:19:38,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:19:38,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:19:38,138 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:19:38,139 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:19:38,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:19:38,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:19:38,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:19:38,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:19:38,223 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:19:38,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-11-07 21:19:38,285 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1f83106/ef3ed1c33cf2416db1ca39365b274d56/FLAGf2fa13cfb [2018-11-07 21:19:39,272 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:19:39,275 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-11-07 21:19:39,324 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1f83106/ef3ed1c33cf2416db1ca39365b274d56/FLAGf2fa13cfb [2018-11-07 21:19:39,339 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1f83106/ef3ed1c33cf2416db1ca39365b274d56 [2018-11-07 21:19:39,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:19:39,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:19:39,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:19:39,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:19:39,359 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:19:39,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:19:39" (1/1) ... [2018-11-07 21:19:39,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46117c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:39, skipping insertion in model container [2018-11-07 21:19:39,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:19:39" (1/1) ... [2018-11-07 21:19:39,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:19:39,630 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:19:41,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:19:41,538 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:19:42,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:19:42,740 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:19:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42 WrapperNode [2018-11-07 21:19:42,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:19:42,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:19:42,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:19:42,742 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:19:42,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:19:43,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:19:43,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:19:43,276 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:19:43,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (1/1) ... [2018-11-07 21:19:43,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:19:43,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:19:43,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:19:43,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:19:43,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (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 21:19:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:19:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:19:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:19:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:19:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:19:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:19:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:19:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:19:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:19:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:19:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:19:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:19:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:19:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:19:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:19:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:19:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:19:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:19:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:19:59,493 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:19:59,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:19:59 BoogieIcfgContainer [2018-11-07 21:19:59,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:19:59,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:19:59,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:19:59,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:19:59,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:19:39" (1/3) ... [2018-11-07 21:19:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7854ffa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:19:59, skipping insertion in model container [2018-11-07 21:19:59,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:42" (2/3) ... [2018-11-07 21:19:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7854ffa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:19:59, skipping insertion in model container [2018-11-07 21:19:59,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:19:59" (3/3) ... [2018-11-07 21:19:59,502 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06_true-unreach-call.c [2018-11-07 21:19:59,511 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:19:59,522 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:19:59,537 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:19:59,590 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:19:59,590 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:19:59,591 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:19:59,591 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:19:59,591 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:19:59,591 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:19:59,591 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:19:59,591 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:19:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:19:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 21:19:59,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:19:59,671 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] [2018-11-07 21:19:59,674 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:19:59,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:19:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1394704370, now seen corresponding path program 1 times [2018-11-07 21:19:59,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:19:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:19:59,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:19:59,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:19:59,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:19:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:00,221 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:20:00,331 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 21:20:00,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:00,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:20:00,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:00,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:20:00,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:20:00,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:20:00,369 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 21:20:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:13,894 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-11-07 21:20:13,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:20:13,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 21:20:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:13,951 INFO L225 Difference]: With dead ends: 5042 [2018-11-07 21:20:13,951 INFO L226 Difference]: Without dead ends: 3262 [2018-11-07 21:20:13,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:20:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-11-07 21:20:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-11-07 21:20:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-11-07 21:20:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-11-07 21:20:14,188 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 61 [2018-11-07 21:20:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:14,189 INFO L480 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-11-07 21:20:14,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:20:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-11-07 21:20:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 21:20:14,208 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:14,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:14,209 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:14,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash 236400336, now seen corresponding path program 1 times [2018-11-07 21:20:14,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:14,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:14,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:14,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:14,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:14,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:14,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:20:14,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:14,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:20:14,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:20:14,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:20:14,707 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-11-07 21:20:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:34,778 INFO L93 Difference]: Finished difference Result 9608 states and 17975 transitions. [2018-11-07 21:20:34,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 21:20:34,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 21:20:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:34,816 INFO L225 Difference]: With dead ends: 9608 [2018-11-07 21:20:34,816 INFO L226 Difference]: Without dead ends: 6400 [2018-11-07 21:20:34,827 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:20:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-11-07 21:20:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6337. [2018-11-07 21:20:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2018-11-07 21:20:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 10076 transitions. [2018-11-07 21:20:34,996 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 10076 transitions. Word has length 161 [2018-11-07 21:20:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:34,997 INFO L480 AbstractCegarLoop]: Abstraction has 6337 states and 10076 transitions. [2018-11-07 21:20:34,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:20:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 10076 transitions. [2018-11-07 21:20:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 21:20:35,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:35,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:35,001 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:35,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:35,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2101705828, now seen corresponding path program 1 times [2018-11-07 21:20:35,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:35,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:35,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:35,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:35,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:35,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:35,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:20:35,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:35,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:20:35,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:20:35,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:20:35,316 INFO L87 Difference]: Start difference. First operand 6337 states and 10076 transitions. Second operand 6 states. [2018-11-07 21:20:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:50,579 INFO L93 Difference]: Finished difference Result 18995 states and 30526 transitions. [2018-11-07 21:20:50,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:20:50,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 21:20:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:50,643 INFO L225 Difference]: With dead ends: 18995 [2018-11-07 21:20:50,643 INFO L226 Difference]: Without dead ends: 12664 [2018-11-07 21:20:50,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:20:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12664 states. [2018-11-07 21:20:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12664 to 12414. [2018-11-07 21:20:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2018-11-07 21:20:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 18890 transitions. [2018-11-07 21:20:50,996 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 18890 transitions. Word has length 171 [2018-11-07 21:20:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:50,997 INFO L480 AbstractCegarLoop]: Abstraction has 12414 states and 18890 transitions. [2018-11-07 21:20:50,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:20:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 18890 transitions. [2018-11-07 21:20:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 21:20:51,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:51,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:51,003 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:51,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1371790217, now seen corresponding path program 1 times [2018-11-07 21:20:51,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:51,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:51,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:51,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:51,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:51,445 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:20:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:51,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:51,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:20:51,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:51,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:20:51,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:20:51,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:20:51,662 INFO L87 Difference]: Start difference. First operand 12414 states and 18890 transitions. Second operand 6 states. [2018-11-07 21:21:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:06,418 INFO L93 Difference]: Finished difference Result 36974 states and 57795 transitions. [2018-11-07 21:21:06,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:21:06,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 21:21:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:06,508 INFO L225 Difference]: With dead ends: 36974 [2018-11-07 21:21:06,508 INFO L226 Difference]: Without dead ends: 24566 [2018-11-07 21:21:06,549 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:21:06,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2018-11-07 21:21:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24168. [2018-11-07 21:21:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24168 states. [2018-11-07 21:21:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 36341 transitions. [2018-11-07 21:21:07,092 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 36341 transitions. Word has length 226 [2018-11-07 21:21:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:07,093 INFO L480 AbstractCegarLoop]: Abstraction has 24168 states and 36341 transitions. [2018-11-07 21:21:07,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:21:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 36341 transitions. [2018-11-07 21:21:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-11-07 21:21:07,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:07,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:07,099 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:07,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:07,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1971346795, now seen corresponding path program 1 times [2018-11-07 21:21:07,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:07,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:07,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:07,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:07,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:07,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:07,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 21:21:07,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:07,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:21:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:21:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:21:07,955 INFO L87 Difference]: Start difference. First operand 24168 states and 36341 transitions. Second operand 7 states. [2018-11-07 21:21:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:37,664 INFO L93 Difference]: Finished difference Result 88838 states and 148890 transitions. [2018-11-07 21:21:37,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:21:37,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2018-11-07 21:21:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:37,944 INFO L225 Difference]: With dead ends: 88838 [2018-11-07 21:21:37,944 INFO L226 Difference]: Without dead ends: 64676 [2018-11-07 21:21:38,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:21:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64676 states. [2018-11-07 21:21:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64676 to 63953. [2018-11-07 21:21:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63953 states. [2018-11-07 21:21:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63953 states to 63953 states and 92999 transitions. [2018-11-07 21:21:40,006 INFO L78 Accepts]: Start accepts. Automaton has 63953 states and 92999 transitions. Word has length 278 [2018-11-07 21:21:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:40,007 INFO L480 AbstractCegarLoop]: Abstraction has 63953 states and 92999 transitions. [2018-11-07 21:21:40,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:21:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 63953 states and 92999 transitions. [2018-11-07 21:21:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-07 21:21:40,021 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:40,022 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:21:40,022 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:40,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 593330083, now seen corresponding path program 1 times [2018-11-07 21:21:40,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:40,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:40,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:40,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:40,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:40,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:21:40,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:21:40,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 491 with the following transitions: [2018-11-07 21:21:40,908 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5614], [5616], [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], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:21:40,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:21:40,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:21:41,812 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:21:41,822 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:21:41,824 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:21:41,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:41,879 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:21:42,933 INFO L227 lantSequenceWeakener]: Weakened 479 states. On average, predicates are now at 75.34% of their original sizes. [2018-11-07 21:21:42,934 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:21:43,302 INFO L415 sIntCurrentIteration]: We unified 489 AI predicates to 489 [2018-11-07 21:21:43,303 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:21:43,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:21:43,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:21:43,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:43,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:21:43,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:21:43,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:21:43,309 INFO L87 Difference]: Start difference. First operand 63953 states and 92999 transitions. Second operand 7 states. [2018-11-07 21:22:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:29,206 INFO L93 Difference]: Finished difference Result 129292 states and 187475 transitions. [2018-11-07 21:22:29,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:22:29,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 490 [2018-11-07 21:22:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:29,435 INFO L225 Difference]: With dead ends: 129292 [2018-11-07 21:22:29,435 INFO L226 Difference]: Without dead ends: 65345 [2018-11-07 21:22:29,570 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 490 GetRequests, 484 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 21:22:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65345 states. [2018-11-07 21:22:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65345 to 65343. [2018-11-07 21:22:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65343 states. [2018-11-07 21:22:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65343 states to 65343 states and 94403 transitions. [2018-11-07 21:22:32,275 INFO L78 Accepts]: Start accepts. Automaton has 65343 states and 94403 transitions. Word has length 490 [2018-11-07 21:22:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:32,275 INFO L480 AbstractCegarLoop]: Abstraction has 65343 states and 94403 transitions. [2018-11-07 21:22:32,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:22:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 65343 states and 94403 transitions. [2018-11-07 21:22:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2018-11-07 21:22:32,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:32,304 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:22:32,305 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:32,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:32,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1355236675, now seen corresponding path program 1 times [2018-11-07 21:22:32,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:32,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:32,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:32,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:32,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:33,322 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 21:22:33,845 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 21:22:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 174 proven. 622 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:22:36,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:22:36,506 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:22:36,506 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 731 with the following transitions: [2018-11-07 21:22:36,507 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5614], [5616], [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], [6432], [6437], [6439], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:22:36,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:22:36,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:22:36,699 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:22:37,202 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:22:37,202 INFO L272 AbstractInterpreter]: Visited 249 different actions 491 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:22:37,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:37,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:22:38,859 INFO L227 lantSequenceWeakener]: Weakened 400 states. On average, predicates are now at 75.3% of their original sizes. [2018-11-07 21:22:38,859 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:22:39,792 INFO L415 sIntCurrentIteration]: We unified 729 AI predicates to 729 [2018-11-07 21:22:39,792 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:22:39,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:22:39,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [13] total 40 [2018-11-07 21:22:39,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:22:39,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-07 21:22:39,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-07 21:22:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2018-11-07 21:22:39,795 INFO L87 Difference]: Start difference. First operand 65343 states and 94403 transitions. Second operand 29 states. Received shutdown request... [2018-11-07 21:23:08,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 21:23:08,307 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:23:08,312 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:23:08,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:23:08 BoogieIcfgContainer [2018-11-07 21:23:08,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:23:08,313 INFO L168 Benchmark]: Toolchain (without parser) took 208962.47 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 410.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:08,314 INFO L168 Benchmark]: CDTParser took 0.23 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 21:23:08,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3388.01 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: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:08,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 533.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 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 99.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:08,317 INFO L168 Benchmark]: Boogie Preprocessor took 468.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:08,318 INFO L168 Benchmark]: RCFGBuilder took 15749.14 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 167.2 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 481.1 MB). Peak memory consumption was 672.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:08,319 INFO L168 Benchmark]: TraceAbstraction took 188817.95 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:23:08,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3388.01 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: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 533.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 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 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 468.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15749.14 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 167.2 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 481.1 MB). Peak memory consumption was 672.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 188817.95 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was constructing difference of abstraction (65343states) and FLOYD_HOARE automaton (currently 27 states, 29 states before enhancement),while ReachableStatesComputation was computing reachable states (2518 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 188.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 168.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4497 SDtfs, 41706 SDslu, 4075 SDs, 0 SdLazy, 52063 SolverSat, 10843 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1272 GetRequests, 1200 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65343occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9988924260813319 AbsIntWeakeningRatio, 0.052545155993431854 AbsIntAvgWeakeningVarsNumRemoved, 9.879310344827585 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 1484 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2117 NumberOfCodeBlocks, 2117 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 9647529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 713/1337 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown