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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:35:48,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:35:48,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:35:48,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:35:48,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:35:48,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:35:48,751 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:35:48,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:35:48,754 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:35:48,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:35:48,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:35:48,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:35:48,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:35:48,760 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:35:48,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:35:48,762 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:35:48,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:35:48,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:35:48,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:35:48,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:35:48,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:35:48,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:35:48,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:35:48,773 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:35:48,773 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:35:48,774 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:35:48,775 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:35:48,776 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:35:48,776 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:35:48,778 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:35:48,778 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:35:48,779 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:35:48,779 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:35:48,779 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:35:48,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:35:48,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:35:48,781 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:35:48,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:35:48,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:35:48,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:35:48,798 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:35:48,798 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:35:48,799 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:35:48,799 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:35:48,799 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:35:48,799 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:35:48,799 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:35:48,800 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:35:48,800 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:35:48,801 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:35:48,801 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:35:48,801 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:35:48,801 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:35:48,801 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:35:48,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:35:48,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:35:48,802 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:35:48,802 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:35:48,802 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:35:48,802 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:35:48,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:35:48,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:35:48,803 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:35:48,803 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:35:48,803 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:35:48,804 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:35:48,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:35:48,804 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:35:48,804 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:35:48,804 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:35:48,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:35:48,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:35:48,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:35:48,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:35:48,894 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:35:48,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-09-14 17:35:49,248 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c5f6b74/357bd10279b542069950a37f594645cb/FLAG861b732b7 [2018-09-14 17:35:49,831 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:35:49,832 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-09-14 17:35:49,871 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c5f6b74/357bd10279b542069950a37f594645cb/FLAG861b732b7 [2018-09-14 17:35:49,892 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c5f6b74/357bd10279b542069950a37f594645cb [2018-09-14 17:35:49,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:35:49,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:35:49,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:35:49,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:35:49,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:35:49,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:35:49" (1/1) ... [2018-09-14 17:35:49,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b28bbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:49, skipping insertion in model container [2018-09-14 17:35:49,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:35:49" (1/1) ... [2018-09-14 17:35:49,934 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:35:51,305 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:35:51,326 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:35:52,050 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:35:52,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52 WrapperNode [2018-09-14 17:35:52,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:35:52,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:35:52,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:35:52,384 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:35:52,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:52,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:52,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:35:52,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:35:52,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:35:52,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:35:53,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:53,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (1/1) ... [2018-09-14 17:35:54,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:35:54,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:35:54,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:35:54,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:35:54,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (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 [2018-09-14 17:35:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:35:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:35:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:35:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:35:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:35:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:35:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:35:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:35:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:35:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:35:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:35:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:35:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:35:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:36:04,960 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:36:04,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:36:04 BoogieIcfgContainer [2018-09-14 17:36:04,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:36:04,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:36:04,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:36:04,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:36:04,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:35:49" (1/3) ... [2018-09-14 17:36:04,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b42da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:36:04, skipping insertion in model container [2018-09-14 17:36:04,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:52" (2/3) ... [2018-09-14 17:36:04,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b42da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:36:04, skipping insertion in model container [2018-09-14 17:36:04,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:36:04" (3/3) ... [2018-09-14 17:36:04,969 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label55_true-unreach-call.c [2018-09-14 17:36:04,979 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:36:04,991 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:36:05,068 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:36:05,068 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:36:05,069 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:36:05,069 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:36:05,069 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:36:05,069 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:36:05,069 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:36:05,069 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:36:05,069 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:36:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:36:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-14 17:36:05,136 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:05,137 INFO L376 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] [2018-09-14 17:36:05,138 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash -661106381, now seen corresponding path program 1 times [2018-09-14 17:36:05,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:05,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:05,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:05,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:05,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:05,690 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:36:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:05,814 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:05,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:36:05,815 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:05,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:36:05,836 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:36:05,837 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:36:05,839 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:36:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:14,455 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-14 17:36:14,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:36:14,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-09-14 17:36:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:14,496 INFO L225 Difference]: With dead ends: 3097 [2018-09-14 17:36:14,497 INFO L226 Difference]: Without dead ends: 1975 [2018-09-14 17:36:14,511 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 [2018-09-14 17:36:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-14 17:36:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-14 17:36:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-14 17:36:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-14 17:36:14,675 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 55 [2018-09-14 17:36:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:14,676 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-14 17:36:14,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:36:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-14 17:36:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 17:36:14,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:14,686 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:36:14,686 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1569430114, now seen corresponding path program 1 times [2018-09-14 17:36:14,687 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:14,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:14,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:14,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:14,688 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:15,067 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:15,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:36:15,068 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:15,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:36:15,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:36:15,070 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:36:15,070 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-14 17:36:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:37,939 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-09-14 17:36:37,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:36:37,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-09-14 17:36:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:37,977 INFO L225 Difference]: With dead ends: 5737 [2018-09-14 17:36:37,977 INFO L226 Difference]: Without dead ends: 3769 [2018-09-14 17:36:37,986 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:36:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-09-14 17:36:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-09-14 17:36:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-09-14 17:36:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-09-14 17:36:38,224 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 131 [2018-09-14 17:36:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:38,225 INFO L480 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-09-14 17:36:38,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:36:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-09-14 17:36:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-14 17:36:38,236 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:38,237 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:36:38,237 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash -265518658, now seen corresponding path program 1 times [2018-09-14 17:36:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:38,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:38,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:38,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:38,239 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:38,504 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:38,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:36:38,505 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:38,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:36:38,506 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:36:38,506 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:36:38,506 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-09-14 17:37:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:07,691 INFO L93 Difference]: Finished difference Result 13664 states and 21759 transitions. [2018-09-14 17:37:07,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:07,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-14 17:37:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:07,758 INFO L225 Difference]: With dead ends: 13664 [2018-09-14 17:37:07,758 INFO L226 Difference]: Without dead ends: 9985 [2018-09-14 17:37:07,786 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 [2018-09-14 17:37:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2018-09-14 17:37:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9795. [2018-09-14 17:37:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-09-14 17:37:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14500 transitions. [2018-09-14 17:37:08,064 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14500 transitions. Word has length 145 [2018-09-14 17:37:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:08,065 INFO L480 AbstractCegarLoop]: Abstraction has 9795 states and 14500 transitions. [2018-09-14 17:37:08,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14500 transitions. [2018-09-14 17:37:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-14 17:37:08,073 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:08,074 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:08,074 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -507392094, now seen corresponding path program 1 times [2018-09-14 17:37:08,075 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:08,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:08,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:08,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:08,076 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:08,430 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:37:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:08,614 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:08,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:37:08,614 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:08,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:37:08,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:37:08,615 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:37:08,616 INFO L87 Difference]: Start difference. First operand 9795 states and 14500 transitions. Second operand 6 states. [2018-09-14 17:37:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:22,589 INFO L93 Difference]: Finished difference Result 34191 states and 53804 transitions. [2018-09-14 17:37:22,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:37:22,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-09-14 17:37:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:22,728 INFO L225 Difference]: With dead ends: 34191 [2018-09-14 17:37:22,728 INFO L226 Difference]: Without dead ends: 24402 [2018-09-14 17:37:22,806 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 [2018-09-14 17:37:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-09-14 17:37:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24169. [2018-09-14 17:37:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24169 states. [2018-09-14 17:37:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24169 states to 24169 states and 34071 transitions. [2018-09-14 17:37:23,651 INFO L78 Accepts]: Start accepts. Automaton has 24169 states and 34071 transitions. Word has length 163 [2018-09-14 17:37:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:23,651 INFO L480 AbstractCegarLoop]: Abstraction has 24169 states and 34071 transitions. [2018-09-14 17:37:23,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:37:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 24169 states and 34071 transitions. [2018-09-14 17:37:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-09-14 17:37:23,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:23,659 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:23,659 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:23,660 INFO L82 PathProgramCache]: Analyzing trace with hash -698990030, now seen corresponding path program 1 times [2018-09-14 17:37:23,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:23,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:23,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:23,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:23,661 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:23,943 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:23,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:37:23,943 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:23,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:37:23,944 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:37:23,944 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:37:23,945 INFO L87 Difference]: Start difference. First operand 24169 states and 34071 transitions. Second operand 4 states. [2018-09-14 17:37:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:34,894 INFO L93 Difference]: Finished difference Result 66649 states and 99957 transitions. [2018-09-14 17:37:34,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:37:34,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-09-14 17:37:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:35,105 INFO L225 Difference]: With dead ends: 66649 [2018-09-14 17:37:35,105 INFO L226 Difference]: Without dead ends: 42486 [2018-09-14 17:37:35,177 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:37:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42486 states. [2018-09-14 17:37:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42486 to 42433. [2018-09-14 17:37:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42433 states. [2018-09-14 17:37:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42433 states to 42433 states and 60054 transitions. [2018-09-14 17:37:36,209 INFO L78 Accepts]: Start accepts. Automaton has 42433 states and 60054 transitions. Word has length 171 [2018-09-14 17:37:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:36,210 INFO L480 AbstractCegarLoop]: Abstraction has 42433 states and 60054 transitions. [2018-09-14 17:37:36,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:37:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 42433 states and 60054 transitions. [2018-09-14 17:37:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-09-14 17:37:36,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:36,234 INFO L376 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, 2, 2, 2, 2, 2, 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] [2018-09-14 17:37:36,235 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1869313388, now seen corresponding path program 1 times [2018-09-14 17:37:36,235 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:36,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:36,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:36,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:36,237 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:36,554 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:37:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:36,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:36,964 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:37:36,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:36,984 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:37,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:37:37,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:38,759 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:37:38,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-14 17:37:38,759 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:38,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:38,761 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:38,761 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:37:38,761 INFO L87 Difference]: Start difference. First operand 42433 states and 60054 transitions. Second operand 5 states. [2018-09-14 17:38:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:03,005 INFO L93 Difference]: Finished difference Result 130759 states and 196725 transitions. [2018-09-14 17:38:03,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:38:03,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2018-09-14 17:38:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:03,476 INFO L225 Difference]: With dead ends: 130759 [2018-09-14 17:38:03,477 INFO L226 Difference]: Without dead ends: 88332 [2018-09-14 17:38:03,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 497 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:38:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88332 states. [2018-09-14 17:38:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88332 to 88189. [2018-09-14 17:38:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88189 states. [2018-09-14 17:38:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88189 states to 88189 states and 123408 transitions. [2018-09-14 17:38:06,343 INFO L78 Accepts]: Start accepts. Automaton has 88189 states and 123408 transitions. Word has length 251 [2018-09-14 17:38:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:06,344 INFO L480 AbstractCegarLoop]: Abstraction has 88189 states and 123408 transitions. [2018-09-14 17:38:06,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:38:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 88189 states and 123408 transitions. [2018-09-14 17:38:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-14 17:38:06,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:06,357 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:38:06,357 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 348886837, now seen corresponding path program 1 times [2018-09-14 17:38:06,358 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:06,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:06,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:06,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:06,359 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:38:06,648 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:38:06,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:38:06,648 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:38:06,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:38:06,649 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:38:06,649 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:38:06,649 INFO L87 Difference]: Start difference. First operand 88189 states and 123408 transitions. Second operand 3 states. [2018-09-14 17:38:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:16,463 INFO L93 Difference]: Finished difference Result 172483 states and 247498 transitions. [2018-09-14 17:38:16,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:38:16,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2018-09-14 17:38:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:16,829 INFO L225 Difference]: With dead ends: 172483 [2018-09-14 17:38:16,829 INFO L226 Difference]: Without dead ends: 97275 [2018-09-14 17:38:16,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:38:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97275 states. [2018-09-14 17:38:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97275 to 97257. [2018-09-14 17:38:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97257 states. [2018-09-14 17:38:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97257 states to 97257 states and 135917 transitions. [2018-09-14 17:38:18,732 INFO L78 Accepts]: Start accepts. Automaton has 97257 states and 135917 transitions. Word has length 257 [2018-09-14 17:38:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:18,733 INFO L480 AbstractCegarLoop]: Abstraction has 97257 states and 135917 transitions. [2018-09-14 17:38:18,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:38:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 97257 states and 135917 transitions. [2018-09-14 17:38:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-14 17:38:18,773 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:18,773 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:18,774 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash -415387274, now seen corresponding path program 1 times [2018-09-14 17:38:18,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:18,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:18,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:18,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:18,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:38:19,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:19,434 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:19,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:19,450 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:19,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:38:20,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:38:21,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:21,212 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:21,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:21,239 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:21,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:38:21,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 17:38:21,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:21,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:38:21,855 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:21,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:38:21,856 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:38:21,856 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:38:21,857 INFO L87 Difference]: Start difference. First operand 97257 states and 135917 transitions. Second operand 9 states. [2018-09-14 17:38:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:48,136 INFO L93 Difference]: Finished difference Result 234114 states and 388526 transitions. [2018-09-14 17:38:48,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:38:48,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 343 [2018-09-14 17:38:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:50,497 INFO L225 Difference]: With dead ends: 234114 [2018-09-14 17:38:50,498 INFO L226 Difference]: Without dead ends: 136863 [2018-09-14 17:38:50,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1370 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:38:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136863 states. [2018-09-14 17:38:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136863 to 136196. [2018-09-14 17:38:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136196 states. [2018-09-14 17:38:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136196 states to 136196 states and 202787 transitions. [2018-09-14 17:38:55,327 INFO L78 Accepts]: Start accepts. Automaton has 136196 states and 202787 transitions. Word has length 343 [2018-09-14 17:38:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:55,328 INFO L480 AbstractCegarLoop]: Abstraction has 136196 states and 202787 transitions. [2018-09-14 17:38:55,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:38:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 136196 states and 202787 transitions. [2018-09-14 17:38:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-09-14 17:38:55,389 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:55,389 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:55,389 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 228698120, now seen corresponding path program 1 times [2018-09-14 17:38:55,390 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:55,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:55,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:55,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:55,391 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:55,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:55,731 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:55,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:55,739 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:55,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:38:56,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:56,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:56,321 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:56,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:56,339 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:56,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:38:56,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:56,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:56,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:38:56,849 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:56,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:38:56,850 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:38:56,850 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:38:56,850 INFO L87 Difference]: Start difference. First operand 136196 states and 202787 transitions. Second operand 9 states. [2018-09-14 17:39:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:26,089 INFO L93 Difference]: Finished difference Result 294175 states and 517571 transitions. [2018-09-14 17:39:26,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-14 17:39:26,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 351 [2018-09-14 17:39:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:27,617 INFO L225 Difference]: With dead ends: 294175 [2018-09-14 17:39:27,618 INFO L226 Difference]: Without dead ends: 157990 [2018-09-14 17:39:27,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1406 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:39:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157990 states. [2018-09-14 17:39:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157990 to 155696. [2018-09-14 17:39:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155696 states. [2018-09-14 17:39:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155696 states to 155696 states and 216217 transitions. [2018-09-14 17:39:31,242 INFO L78 Accepts]: Start accepts. Automaton has 155696 states and 216217 transitions. Word has length 351 [2018-09-14 17:39:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:31,242 INFO L480 AbstractCegarLoop]: Abstraction has 155696 states and 216217 transitions. [2018-09-14 17:39:31,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:39:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 155696 states and 216217 transitions. [2018-09-14 17:39:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-14 17:39:31,288 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:31,289 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:39:31,289 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash -258905025, now seen corresponding path program 1 times [2018-09-14 17:39:31,290 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:31,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:31,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:31,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:31,291 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:31,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:31,603 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:31,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:31,611 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:31,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:32,540 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:32,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:32,718 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:32,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:32,735 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:32,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:33,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:39:33,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:33,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-14 17:39:33,296 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:33,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:39:33,297 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:39:33,297 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:39:33,298 INFO L87 Difference]: Start difference. First operand 155696 states and 216217 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:39:34,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:39:34,814 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:39:34,821 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:39:34,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:39:34 BoogieIcfgContainer [2018-09-14 17:39:34,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:39:34,823 INFO L168 Benchmark]: Toolchain (without parser) took 224916.96 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,824 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-14 17:39:34,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2472.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 400.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,826 INFO L168 Benchmark]: Boogie Preprocessor took 1266.29 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,827 INFO L168 Benchmark]: RCFGBuilder took 10910.43 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 157.8 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -424.4 kB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,828 INFO L168 Benchmark]: TraceAbstraction took 209859.72 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -218.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:39:34,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2472.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 400.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1266.29 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10910.43 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 157.8 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -424.4 kB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209859.72 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -218.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (155696states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (6996 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6162 SDtfs, 33472 SDslu, 5949 SDs, 0 SdLazy, 67986 SolverSat, 13863 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 149.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4801 GetRequests, 4692 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155696occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 3683 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4565 NumberOfCodeBlocks, 4565 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6886 ConstructedInterpolants, 0 QuantifiedInterpolants, 5134892 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4059 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 5643/6096 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label55_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-39-34-848.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label55_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-39-34-848.csv Completed graceful shutdown