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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:49:39,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:49:39,779 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:49:39,794 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:49:39,795 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:49:39,796 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:49:39,797 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:49:39,799 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:49:39,801 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:49:39,802 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:49:39,803 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:49:39,803 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:49:39,804 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:49:39,805 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:49:39,806 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:49:39,807 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:49:39,808 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:49:39,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:49:39,812 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:49:39,814 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:49:39,815 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:49:39,816 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:49:39,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:49:39,819 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:49:39,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:49:39,820 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:49:39,821 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:49:39,822 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:49:39,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:49:39,824 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:49:39,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:49:39,825 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:49:39,825 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:49:39,826 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:49:39,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:49:39,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:49:39,828 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:49:39,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:49:39,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:49:39,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:49:39,846 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:49:39,846 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:49:39,846 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:49:39,846 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:49:39,846 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:49:39,847 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:49:39,847 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:49:39,847 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:49:39,847 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:49:39,847 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:49:39,848 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:49:39,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:49:39,849 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:49:39,849 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:49:39,849 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:49:39,849 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:49:39,849 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:49:39,850 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:49:39,850 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:49:39,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:49:39,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:49:39,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:49:39,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:49:39,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:49:39,851 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:49:39,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:49:39,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:49:39,852 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:49:39,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:49:39,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:49:39,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:49:39,916 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:49:39,917 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:49:39,918 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 09:49:39,980 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf530798/e2d0ceb7cf8f4d02be8d21643817c5ae/FLAG082393e54 [2018-11-07 09:49:40,892 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:49:40,894 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 09:49:40,948 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf530798/e2d0ceb7cf8f4d02be8d21643817c5ae/FLAG082393e54 [2018-11-07 09:49:40,969 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daf530798/e2d0ceb7cf8f4d02be8d21643817c5ae [2018-11-07 09:49:40,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:49:40,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:49:40,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:49:40,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:49:40,995 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:49:40,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:49:40" (1/1) ... [2018-11-07 09:49:41,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186b10df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:40, skipping insertion in model container [2018-11-07 09:49:41,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:49:40" (1/1) ... [2018-11-07 09:49:41,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:49:41,286 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:49:43,384 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:49:43,389 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:49:44,594 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:49:44,664 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:49:44,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44 WrapperNode [2018-11-07 09:49:44,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:49:44,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:49:44,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:49:44,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:49:44,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:49:45,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:49:45,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:49:45,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:49:45,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (1/1) ... [2018-11-07 09:49:45,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:49:45,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:49:45,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:49:45,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:49:45,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (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 09:49:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:49:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:49:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:49:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 09:49:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 09:49:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 09:49:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 09:49:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 09:49:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 09:49:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:49:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:49:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:49:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:49:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:49:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:49:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:49:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:49:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:49:45,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:50:00,200 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:50:00,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:50:00 BoogieIcfgContainer [2018-11-07 09:50:00,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:50:00,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:50:00,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:50:00,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:50:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:49:40" (1/3) ... [2018-11-07 09:50:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df9d200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:50:00, skipping insertion in model container [2018-11-07 09:50:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:49:44" (2/3) ... [2018-11-07 09:50:00,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df9d200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:50:00, skipping insertion in model container [2018-11-07 09:50:00,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:50:00" (3/3) ... [2018-11-07 09:50:00,209 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label36_true-unreach-call.c [2018-11-07 09:50:00,219 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:50:00,230 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:50:00,245 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:50:00,300 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:50:00,301 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:50:00,301 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:50:00,301 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:50:00,301 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:50:00,301 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:50:00,302 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:50:00,302 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:50:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 09:50:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 09:50:00,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:50:00,380 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] [2018-11-07 09:50:00,382 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:50:00,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:50:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1662781076, now seen corresponding path program 1 times [2018-11-07 09:50:00,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:50:00,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:00,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:50:00,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:00,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:50:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:50:00,865 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:50:00,987 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 09:50:00,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:50:00,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:50:00,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:50:01,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:50:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:50:01,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:50:01,025 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 09:50:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:50:13,985 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 09:50:13,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:50:13,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 09:50:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:50:14,041 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 09:50:14,042 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 09:50:14,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:50:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 09:50:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 09:50:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 09:50:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 09:50:14,287 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 40 [2018-11-07 09:50:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:50:14,288 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 09:50:14,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:50:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 09:50:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 09:50:14,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:50:14,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:14,302 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:50:14,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:50:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash -997001405, now seen corresponding path program 1 times [2018-11-07 09:50:14,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:50:14,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:14,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:50:14,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:14,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:50:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:50:14,640 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:50:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:50:15,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:50:15,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:50:15,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:50:15,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:50:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:50:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:50:15,043 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 09:50:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:50:37,177 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 09:50:37,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:50:37,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 09:50:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:50:37,216 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 09:50:37,216 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 09:50:37,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:50:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 09:50:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 09:50:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 09:50:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 09:50:37,384 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 112 [2018-11-07 09:50:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:50:37,384 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 09:50:37,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:50:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 09:50:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 09:50:37,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:50:37,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:50:37,390 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:50:37,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:50:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2068825087, now seen corresponding path program 1 times [2018-11-07 09:50:37,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:50:37,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:37,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:50:37,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:50:37,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:50:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:50:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:50:37,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:50:37,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:50:37,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:50:37,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:50:37,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:50:37,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:50:37,687 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 09:51:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:51:04,635 INFO L93 Difference]: Finished difference Result 24232 states and 39679 transitions. [2018-11-07 09:51:04,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:51:04,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 09:51:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:51:04,728 INFO L225 Difference]: With dead ends: 24232 [2018-11-07 09:51:04,729 INFO L226 Difference]: Without dead ends: 18154 [2018-11-07 09:51:04,766 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 09:51:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2018-11-07 09:51:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18078. [2018-11-07 09:51:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18078 states. [2018-11-07 09:51:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18078 states to 18078 states and 25605 transitions. [2018-11-07 09:51:05,289 INFO L78 Accepts]: Start accepts. Automaton has 18078 states and 25605 transitions. Word has length 130 [2018-11-07 09:51:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:51:05,289 INFO L480 AbstractCegarLoop]: Abstraction has 18078 states and 25605 transitions. [2018-11-07 09:51:05,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:51:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18078 states and 25605 transitions. [2018-11-07 09:51:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 09:51:05,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:51:05,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:05,299 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:51:05,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash -162888064, now seen corresponding path program 1 times [2018-11-07 09:51:05,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:51:05,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:05,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:51:05,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:05,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:51:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:51:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:51:05,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:51:05,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:51:05,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:51:05,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:51:05,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:51:05,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:51:05,624 INFO L87 Difference]: Start difference. First operand 18078 states and 25605 transitions. Second operand 5 states. [2018-11-07 09:51:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:51:21,141 INFO L93 Difference]: Finished difference Result 56174 states and 84459 transitions. [2018-11-07 09:51:21,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:51:21,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-11-07 09:51:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:51:21,321 INFO L225 Difference]: With dead ends: 56174 [2018-11-07 09:51:21,322 INFO L226 Difference]: Without dead ends: 38102 [2018-11-07 09:51:21,395 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:51:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38102 states. [2018-11-07 09:51:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38102 to 36927. [2018-11-07 09:51:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36927 states. [2018-11-07 09:51:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36927 states to 36927 states and 49675 transitions. [2018-11-07 09:51:22,361 INFO L78 Accepts]: Start accepts. Automaton has 36927 states and 49675 transitions. Word has length 175 [2018-11-07 09:51:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:51:22,362 INFO L480 AbstractCegarLoop]: Abstraction has 36927 states and 49675 transitions. [2018-11-07 09:51:22,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:51:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 36927 states and 49675 transitions. [2018-11-07 09:51:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 09:51:22,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:51:22,370 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:51:22,370 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:51:22,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:22,374 INFO L82 PathProgramCache]: Analyzing trace with hash 573942238, now seen corresponding path program 1 times [2018-11-07 09:51:22,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:51:22,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:22,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:51:22,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:22,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:51:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:51:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:51:22,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:51:22,903 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:51:22,904 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 09:51:22,907 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], [5446], [5448], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 09:51:22,964 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:51:22,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:51:23,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:51:23,454 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 09:51:23,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:23,504 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:51:24,026 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 75.45% of their original sizes. [2018-11-07 09:51:24,026 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:51:24,277 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 09:51:24,278 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:51:24,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:51:24,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:51:24,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:51:24,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:51:24,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:51:24,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:51:24,281 INFO L87 Difference]: Start difference. First operand 36927 states and 49675 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 09:53:33,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:53:33,013 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:53:33,018 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:53:33,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:53:33 BoogieIcfgContainer [2018-11-07 09:53:33,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:53:33,019 INFO L168 Benchmark]: Toolchain (without parser) took 232036.04 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,020 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:53:33,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3679.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 562.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 831.0 MB). Free memory was 986.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,022 INFO L168 Benchmark]: Boogie Preprocessor took 367.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,025 INFO L168 Benchmark]: RCFGBuilder took 14603.90 ms. Allocated memory was 2.3 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 1.7 GB in the end (delta: 498.4 MB). Peak memory consumption was 674.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,026 INFO L168 Benchmark]: TraceAbstraction took 212816.58 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -804.3 MB). Peak memory consumption was 783.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:53:33,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3679.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 562.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 831.0 MB). Free memory was 986.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 367.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14603.90 ms. Allocated memory was 2.3 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 1.7 GB in the end (delta: 498.4 MB). Peak memory consumption was 674.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212816.58 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -804.3 MB). Peak memory consumption was 783.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (36927states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (37424 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 212.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 206.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3285 SDtfs, 22921 SDslu, 3079 SDs, 0 SdLazy, 41292 SolverSat, 9876 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 230 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36927occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9973471265772925 AbsIntWeakeningRatio, 0.13917525773195877 AbsIntAvgWeakeningVarsNumRemoved, 17.195876288659793 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 1293 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 652 NumberOfCodeBlocks, 652 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 414696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 170/238 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown