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/Problem12_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:15:54,049 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:15:54,051 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:15:54,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:15:54,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:15:54,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:15:54,066 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:15:54,068 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:15:54,070 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:15:54,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:15:54,072 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:15:54,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:15:54,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:15:54,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:15:54,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:15:54,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:15:54,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:15:54,083 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:15:54,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:15:54,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:15:54,095 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:15:54,096 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:15:54,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:15:54,100 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:15:54,100 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:15:54,101 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:15:54,102 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:15:54,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:15:54,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:15:54,108 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:15:54,108 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:15:54,111 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:15:54,112 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:15:54,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:15:54,114 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:15:54,115 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:15:54,115 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 20:15:54,143 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:15:54,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:15:54,144 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:15:54,144 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:15:54,145 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:15:54,146 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:15:54,146 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:15:54,146 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:15:54,146 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:15:54,146 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:15:54,147 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:15:54,147 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:15:54,147 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:15:54,148 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:15:54,148 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:15:54,149 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:15:54,149 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:15:54,149 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:15:54,149 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:15:54,149 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:15:54,150 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:15:54,150 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:15:54,150 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:15:54,150 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:15:54,150 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:15:54,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:15:54,152 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:15:54,153 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:15:54,153 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:15:54,153 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:15:54,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:15:54,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:15:54,154 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:15:54,154 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:15:54,154 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:15:54,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:15:54,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:15:54,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:15:54,243 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:15:54,244 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:15:54,245 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-11-07 20:15:54,310 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb0b07779/f150815ab0614de2be28581d9ff690c6/FLAG79fabfe09 [2018-11-07 20:15:55,111 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:15:55,112 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-11-07 20:15:55,141 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb0b07779/f150815ab0614de2be28581d9ff690c6/FLAG79fabfe09 [2018-11-07 20:15:55,156 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb0b07779/f150815ab0614de2be28581d9ff690c6 [2018-11-07 20:15:55,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:15:55,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:15:55,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:15:55,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:15:55,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:15:55,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:15:55" (1/1) ... [2018-11-07 20:15:55,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ec4244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:55, skipping insertion in model container [2018-11-07 20:15:55,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:15:55" (1/1) ... [2018-11-07 20:15:55,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:15:55,329 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:15:56,735 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:15:56,745 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:15:57,318 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:15:57,351 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:15:57,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57 WrapperNode [2018-11-07 20:15:57,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:15:57,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:15:57,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:15:57,353 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:15:57,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:15:57,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:15:57,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:15:57,741 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:15:57,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (1/1) ... [2018-11-07 20:15:57,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:15:57,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:15:57,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:15:57,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:15:57,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (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 20:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:15:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:15:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:15:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:15:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:15:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:15:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:15:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:16:06,910 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:16:06,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:06 BoogieIcfgContainer [2018-11-07 20:16:06,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:16:06,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:16:06,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:16:06,916 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:16:06,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:15:55" (1/3) ... [2018-11-07 20:16:06,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0b398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:06, skipping insertion in model container [2018-11-07 20:16:06,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:57" (2/3) ... [2018-11-07 20:16:06,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a0b398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:06, skipping insertion in model container [2018-11-07 20:16:06,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:06" (3/3) ... [2018-11-07 20:16:06,920 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04_true-unreach-call.c [2018-11-07 20:16:06,930 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:16:06,940 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:16:06,957 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:16:07,003 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:16:07,003 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:16:07,003 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:16:07,003 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:16:07,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:16:07,004 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:16:07,004 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:16:07,004 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:16:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:16:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 20:16:07,054 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:07,055 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:16:07,144 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:07,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash -629755477, now seen corresponding path program 1 times [2018-11-07 20:16:07,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:07,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:07,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:07,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:07,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:07,764 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:16:07,889 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 20:16:07,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:07,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:16:07,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:07,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:16:07,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:16:07,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:16:07,919 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:16:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:15,326 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:16:15,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:16:15,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 20:16:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:15,379 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:16:15,379 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:16:15,396 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 20:16:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:16:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:16:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:16:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 20:16:15,592 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 67 [2018-11-07 20:16:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:15,593 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 20:16:15,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:16:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 20:16:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 20:16:15,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:15,606 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 20:16:15,607 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:15,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:15,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1436302644, now seen corresponding path program 1 times [2018-11-07 20:16:15,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:15,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:15,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:15,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:15,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:15,982 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:16:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:16:16,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:16,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:16:16,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:16,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:16:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:16:16,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:16:16,059 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 20:16:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:29,336 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 20:16:29,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:16:29,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 20:16:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:29,374 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 20:16:29,374 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 20:16:29,382 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 20:16:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 20:16:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 20:16:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 20:16:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 20:16:29,504 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 145 [2018-11-07 20:16:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:29,504 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 20:16:29,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:16:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 20:16:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 20:16:29,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:29,512 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 20:16:29,512 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:29,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash -659539728, now seen corresponding path program 1 times [2018-11-07 20:16:29,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:29,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:29,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:29,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:29,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:16:29,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:29,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:16:29,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:29,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:16:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:16:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:16:29,703 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 20:16:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:37,170 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 20:16:37,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:16:37,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 20:16:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:37,231 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 20:16:37,231 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 20:16:37,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:16:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 20:16:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 20:16:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 20:16:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 20:16:37,505 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 147 [2018-11-07 20:16:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:37,505 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 20:16:37,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:16:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 20:16:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 20:16:37,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:37,509 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:37,509 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:37,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:37,510 INFO L82 PathProgramCache]: Analyzing trace with hash -731114027, now seen corresponding path program 1 times [2018-11-07 20:16:37,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:37,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:37,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:37,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:37,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:16:37,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:37,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:16:37,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:37,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:16:37,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:16:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:16:37,744 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 20:16:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:50,971 INFO L93 Difference]: Finished difference Result 38051 states and 60894 transitions. [2018-11-07 20:16:50,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:16:50,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 20:16:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:51,094 INFO L225 Difference]: With dead ends: 38051 [2018-11-07 20:16:51,094 INFO L226 Difference]: Without dead ends: 28530 [2018-11-07 20:16:51,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:16:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28530 states. [2018-11-07 20:16:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28530 to 28478. [2018-11-07 20:16:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28478 states. [2018-11-07 20:16:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28478 states to 28478 states and 41531 transitions. [2018-11-07 20:16:51,860 INFO L78 Accepts]: Start accepts. Automaton has 28478 states and 41531 transitions. Word has length 158 [2018-11-07 20:16:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:51,861 INFO L480 AbstractCegarLoop]: Abstraction has 28478 states and 41531 transitions. [2018-11-07 20:16:51,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:16:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 28478 states and 41531 transitions. [2018-11-07 20:16:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 20:16:51,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:51,869 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:51,869 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:51,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -90858887, now seen corresponding path program 1 times [2018-11-07 20:16:51,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:51,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:51,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:51,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:51,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:52,205 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:16:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:16:52,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:52,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:16:52,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:52,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:16:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:16:52,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:16:52,419 INFO L87 Difference]: Start difference. First operand 28478 states and 41531 transitions. Second operand 6 states. [2018-11-07 20:17:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:02,350 INFO L93 Difference]: Finished difference Result 76099 states and 117787 transitions. [2018-11-07 20:17:02,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:17:02,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-07 20:17:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:02,555 INFO L225 Difference]: With dead ends: 76099 [2018-11-07 20:17:02,556 INFO L226 Difference]: Without dead ends: 47627 [2018-11-07 20:17:02,660 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 20:17:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47627 states. [2018-11-07 20:17:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47627 to 47440. [2018-11-07 20:17:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47440 states. [2018-11-07 20:17:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47440 states to 47440 states and 66607 transitions. [2018-11-07 20:17:04,032 INFO L78 Accepts]: Start accepts. Automaton has 47440 states and 66607 transitions. Word has length 192 [2018-11-07 20:17:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:04,033 INFO L480 AbstractCegarLoop]: Abstraction has 47440 states and 66607 transitions. [2018-11-07 20:17:04,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:17:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 47440 states and 66607 transitions. [2018-11-07 20:17:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 20:17:04,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:04,046 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:17:04,046 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:04,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1240874338, now seen corresponding path program 1 times [2018-11-07 20:17:04,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:04,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:04,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:04,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:04,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:04,332 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 120 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:17:04,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:17:04,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:17:04,489 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 20:17:04,491 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2303], [2305], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:17:04,543 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:17:04,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:17:05,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:17:05,187 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:17:05,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:05,221 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:17:05,899 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 20:17:05,899 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:17:06,380 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 20:17:06,380 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:17:06,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:17:06,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 20:17:06,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:06,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:17:06,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:17:06,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:17:06,385 INFO L87 Difference]: Start difference. First operand 47440 states and 66607 transitions. Second operand 8 states. [2018-11-07 20:17:14,860 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:18:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:01,085 INFO L93 Difference]: Finished difference Result 95644 states and 134118 transitions. [2018-11-07 20:18:01,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:18:01,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2018-11-07 20:18:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:01,231 INFO L225 Difference]: With dead ends: 95644 [2018-11-07 20:18:01,231 INFO L226 Difference]: Without dead ends: 48210 [2018-11-07 20:18:01,318 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:18:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48210 states. [2018-11-07 20:18:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48210 to 48208. [2018-11-07 20:18:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48208 states. [2018-11-07 20:18:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48208 states to 48208 states and 67386 transitions. [2018-11-07 20:18:03,152 INFO L78 Accepts]: Start accepts. Automaton has 48208 states and 67386 transitions. Word has length 256 [2018-11-07 20:18:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:03,153 INFO L480 AbstractCegarLoop]: Abstraction has 48208 states and 67386 transitions. [2018-11-07 20:18:03,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:18:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 48208 states and 67386 transitions. [2018-11-07 20:18:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-07 20:18:03,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:03,169 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 20:18:03,169 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:03,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:03,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1231181236, now seen corresponding path program 1 times [2018-11-07 20:18:03,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:03,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:03,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:18:03,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:18:03,786 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:18:03,786 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-11-07 20:18:03,787 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2303], [2305], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2444], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:18:03,795 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:18:03,795 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:18:04,067 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:18:04,253 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:18:04,254 INFO L272 AbstractInterpreter]: Visited 154 different actions 304 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:18:04,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:04,293 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:18:04,883 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 20:18:04,883 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:18:05,895 INFO L415 sIntCurrentIteration]: We unified 303 AI predicates to 303 [2018-11-07 20:18:05,895 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:18:05,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:18:05,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 20:18:05,895 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:05,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:18:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:18:05,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:18:05,896 INFO L87 Difference]: Start difference. First operand 48208 states and 67386 transitions. Second operand 20 states. [2018-11-07 20:19:15,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:15,691 INFO L93 Difference]: Finished difference Result 96712 states and 135520 transitions. [2018-11-07 20:19:15,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 20:19:15,691 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 304 [2018-11-07 20:19:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:15,825 INFO L225 Difference]: With dead ends: 96712 [2018-11-07 20:19:15,826 INFO L226 Difference]: Without dead ends: 49278 [2018-11-07 20:19:15,958 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 20:19:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49278 states. [2018-11-07 20:19:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49278 to 49273. [2018-11-07 20:19:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49273 states. [2018-11-07 20:19:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49273 states to 49273 states and 68494 transitions. [2018-11-07 20:19:16,782 INFO L78 Accepts]: Start accepts. Automaton has 49273 states and 68494 transitions. Word has length 304 [2018-11-07 20:19:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:16,782 INFO L480 AbstractCegarLoop]: Abstraction has 49273 states and 68494 transitions. [2018-11-07 20:19:16,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:19:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 49273 states and 68494 transitions. [2018-11-07 20:19:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-11-07 20:19:16,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:16,797 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:19:16,798 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:16,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:16,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1276602628, now seen corresponding path program 1 times [2018-11-07 20:19:16,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:16,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:16,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:16,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:16,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 20:19:17,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:17,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:19:17,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:17,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:19:17,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:19:17,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:19:17,100 INFO L87 Difference]: Start difference. First operand 49273 states and 68494 transitions. Second operand 4 states. Received shutdown request... [2018-11-07 20:19:32,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:19:32,930 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:19:32,935 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:19:32,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:19:32 BoogieIcfgContainer [2018-11-07 20:19:32,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:19:32,937 INFO L168 Benchmark]: Toolchain (without parser) took 217768.11 ms. Allocated memory was 1.5 GB in the beginning and 6.9 GB in the end (delta: 5.4 GB). Free memory was 1.4 GB in the beginning and 4.7 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,938 INFO L168 Benchmark]: CDTParser took 0.22 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 20:19:32,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2181.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 387.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,940 INFO L168 Benchmark]: Boogie Preprocessor took 198.29 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,941 INFO L168 Benchmark]: RCFGBuilder took 8972.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.6 MB). Peak memory consumption was 652.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,944 INFO L168 Benchmark]: TraceAbstraction took 206023.70 ms. Allocated memory was 2.4 GB in the beginning and 6.9 GB in the end (delta: 4.6 GB). Free memory was 1.6 GB in the beginning and 4.7 GB in the end (delta: -3.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:19:32,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2181.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 387.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 198.29 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8972.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.6 MB). Peak memory consumption was 652.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206023.70 ms. Allocated memory was 2.4 GB in the beginning and 6.9 GB in the end (delta: 4.6 GB). Free memory was 1.6 GB in the beginning and 4.7 GB in the end (delta: -3.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (49273states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (16043 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 192.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2578 SDtfs, 22877 SDslu, 1969 SDs, 0 SdLazy, 44791 SolverSat, 6401 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 623 GetRequests, 550 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49273occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978783510655879 AbsIntWeakeningRatio, 0.0967741935483871 AbsIntAvgWeakeningVarsNumRemoved, 19.440860215053764 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 360 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1577 NumberOfCodeBlocks, 1577 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1569 ConstructedInterpolants, 0 QuantifiedInterpolants, 1078953 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 785/862 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown