java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:40:07,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:40:07,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:40:07,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:40:07,793 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:40:07,794 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:40:07,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:40:07,798 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:40:07,800 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:40:07,800 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:40:07,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:40:07,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:40:07,803 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:40:07,803 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:40:07,807 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:40:07,808 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:40:07,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:40:07,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:40:07,812 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:40:07,814 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:40:07,815 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:40:07,816 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:40:07,818 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:40:07,818 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:40:07,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:40:07,819 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:40:07,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:40:07,821 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:40:07,822 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:40:07,823 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:40:07,823 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:40:07,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:40:07,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:40:07,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:40:07,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:40:07,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:40:07,828 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:40:07,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:40:07,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:40:07,858 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:40:07,858 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:40:07,859 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:40:07,859 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:40:07,859 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:40:07,859 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:40:07,859 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:40:07,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:40:07,862 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:40:07,863 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:40:07,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:40:07,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:40:07,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:40:07,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:40:07,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:40:07,864 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:40:07,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:40:07,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:40:07,867 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:40:07,867 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:40:07,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:40:07,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:40:07,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:40:07,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:40:07,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:40:07,869 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:40:07,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:40:07,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:40:07,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:40:07,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:40:07,959 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:40:07,959 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:40:07,960 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 15:40:08,027 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac86c804/c7b489a448c247a3b74ad97d2a5bdad9/FLAGb62311bfe [2018-11-07 15:40:08,818 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:40:08,820 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 15:40:08,849 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac86c804/c7b489a448c247a3b74ad97d2a5bdad9/FLAGb62311bfe [2018-11-07 15:40:08,869 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac86c804/c7b489a448c247a3b74ad97d2a5bdad9 [2018-11-07 15:40:08,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:40:08,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:40:08,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:40:08,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:40:08,891 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:40:08,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:08" (1/1) ... [2018-11-07 15:40:08,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:08, skipping insertion in model container [2018-11-07 15:40:08,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:08" (1/1) ... [2018-11-07 15:40:08,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:40:09,058 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:40:10,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:40:10,113 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:40:10,604 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:40:10,634 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:40:10,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10 WrapperNode [2018-11-07 15:40:10,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:40:10,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:40:10,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:40:10,637 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:40:10,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:10,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:10,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:40:10,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:40:10,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:40:10,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:40:10,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:10,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:10,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:10,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:11,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:11,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:11,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (1/1) ... [2018-11-07 15:40:11,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:40:11,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:40:11,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:40:11,132 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:40:11,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (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 15:40:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:40:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:40:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:40:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:40:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:40:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:40:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:40:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:40:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:40:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:40:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:40:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:40:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:40:18,838 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:40:18,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:18 BoogieIcfgContainer [2018-11-07 15:40:18,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:40:18,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:40:18,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:40:18,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:40:18,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:40:08" (1/3) ... [2018-11-07 15:40:18,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f59dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:18, skipping insertion in model container [2018-11-07 15:40:18,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10" (2/3) ... [2018-11-07 15:40:18,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f59dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:18, skipping insertion in model container [2018-11-07 15:40:18,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:18" (3/3) ... [2018-11-07 15:40:18,847 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label11_true-unreach-call.c [2018-11-07 15:40:18,857 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:40:18,867 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:40:18,886 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:40:18,939 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:40:18,940 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:40:18,940 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:40:18,940 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:40:18,940 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:40:18,940 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:40:18,941 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:40:18,941 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:40:18,984 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:40:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 15:40:18,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:18,999 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:40:19,002 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:19,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2146476495, now seen corresponding path program 1 times [2018-11-07 15:40:19,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:19,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:19,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:19,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:19,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:19,424 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:40:19,554 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 15:40:19,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:19,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:40:19,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:19,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:40:19,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:40:19,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:40:19,588 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:40:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:40:26,275 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:40:26,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:40:26,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 15:40:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:40:26,309 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:40:26,309 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:40:26,322 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 15:40:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:40:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:40:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:40:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 15:40:26,499 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 49 [2018-11-07 15:40:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:40:26,499 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 15:40:26,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:40:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 15:40:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 15:40:26,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:26,507 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:26,507 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:26,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash -108782427, now seen corresponding path program 1 times [2018-11-07 15:40:26,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:26,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:26,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:26,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:26,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:26,876 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:40:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:27,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:27,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:40:27,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:27,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:40:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:40:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:40:27,129 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 15:40:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:40:38,718 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 15:40:38,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:40:38,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 15:40:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:40:38,740 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 15:40:38,741 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 15:40:38,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:40:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 15:40:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 15:40:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 15:40:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 15:40:38,842 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 120 [2018-11-07 15:40:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:40:38,843 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 15:40:38,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:40:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 15:40:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 15:40:38,849 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:38,849 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:38,850 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:38,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:38,850 INFO L82 PathProgramCache]: Analyzing trace with hash 579963756, now seen corresponding path program 1 times [2018-11-07 15:40:38,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:38,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:38,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:38,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:38,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:39,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:39,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:40:39,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:39,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:40:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:40:39,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:40:39,118 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 15:40:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:40:49,778 INFO L93 Difference]: Finished difference Result 11199 states and 19625 transitions. [2018-11-07 15:40:49,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:40:49,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 15:40:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:40:49,845 INFO L225 Difference]: With dead ends: 11199 [2018-11-07 15:40:49,845 INFO L226 Difference]: Without dead ends: 8280 [2018-11-07 15:40:49,875 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 15:40:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-07 15:40:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-07 15:40:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-07 15:40:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12155 transitions. [2018-11-07 15:40:50,164 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12155 transitions. Word has length 125 [2018-11-07 15:40:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:40:50,165 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12155 transitions. [2018-11-07 15:40:50,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:40:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12155 transitions. [2018-11-07 15:40:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 15:40:50,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:50,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:50,172 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:50,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:50,172 INFO L82 PathProgramCache]: Analyzing trace with hash -699084424, now seen corresponding path program 1 times [2018-11-07 15:40:50,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:50,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:50,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:50,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:50,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:50,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:50,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:40:50,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:50,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:40:50,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:40:50,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:40:50,435 INFO L87 Difference]: Start difference. First operand 8210 states and 12155 transitions. Second operand 4 states. [2018-11-07 15:40:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:40:57,909 INFO L93 Difference]: Finished difference Result 30093 states and 48164 transitions. [2018-11-07 15:40:57,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:40:57,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-11-07 15:40:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:40:58,067 INFO L225 Difference]: With dead ends: 30093 [2018-11-07 15:40:58,067 INFO L226 Difference]: Without dead ends: 21889 [2018-11-07 15:40:58,143 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 [2018-11-07 15:40:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21889 states. [2018-11-07 15:40:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21889 to 21887. [2018-11-07 15:40:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21887 states. [2018-11-07 15:40:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21887 states to 21887 states and 32689 transitions. [2018-11-07 15:40:58,826 INFO L78 Accepts]: Start accepts. Automaton has 21887 states and 32689 transitions. Word has length 147 [2018-11-07 15:40:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:40:58,827 INFO L480 AbstractCegarLoop]: Abstraction has 21887 states and 32689 transitions. [2018-11-07 15:40:58,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:40:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 21887 states and 32689 transitions. [2018-11-07 15:40:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 15:40:58,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:40:58,846 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:58,846 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:40:58,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:40:58,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2087141983, now seen corresponding path program 1 times [2018-11-07 15:40:58,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:40:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:58,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:40:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:40:58,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:40:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:40:59,168 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:40:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:40:59,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:40:59,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:40:59,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:40:59,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:40:59,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:40:59,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:40:59,666 INFO L87 Difference]: Start difference. First operand 21887 states and 32689 transitions. Second operand 6 states. [2018-11-07 15:41:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:05,862 INFO L93 Difference]: Finished difference Result 56189 states and 86082 transitions. [2018-11-07 15:41:05,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:41:05,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-07 15:41:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:06,044 INFO L225 Difference]: With dead ends: 56189 [2018-11-07 15:41:06,044 INFO L226 Difference]: Without dead ends: 34308 [2018-11-07 15:41:06,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:41:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34308 states. [2018-11-07 15:41:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34308 to 34219. [2018-11-07 15:41:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34219 states. [2018-11-07 15:41:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34219 states to 34219 states and 46601 transitions. [2018-11-07 15:41:07,039 INFO L78 Accepts]: Start accepts. Automaton has 34219 states and 46601 transitions. Word has length 230 [2018-11-07 15:41:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:07,040 INFO L480 AbstractCegarLoop]: Abstraction has 34219 states and 46601 transitions. [2018-11-07 15:41:07,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:41:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 34219 states and 46601 transitions. [2018-11-07 15:41:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 15:41:07,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:07,288 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:41:07,288 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:07,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:07,289 INFO L82 PathProgramCache]: Analyzing trace with hash 374301254, now seen corresponding path program 1 times [2018-11-07 15:41:07,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:07,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:07,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:07,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:07,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:41:07,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:41:07,840 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:41:07,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 15:41:07,844 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1915], [1917], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:41:07,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:41:07,895 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:41:08,613 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:41:08,614 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:41:08,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:08,658 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:41:09,334 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 15:41:09,334 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:41:09,682 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 15:41:09,682 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:41:09,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:41:09,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:41:09,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:09,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:41:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:41:09,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:41:09,686 INFO L87 Difference]: Start difference. First operand 34219 states and 46601 transitions. Second operand 7 states. [2018-11-07 15:41:20,463 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:44:05,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:44:05,261 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:44:05,268 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:44:05,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:05 BoogieIcfgContainer [2018-11-07 15:44:05,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:44:05,270 INFO L168 Benchmark]: Toolchain (without parser) took 236386.81 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 453.8 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:05,271 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:44:05,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1750.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:05,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 277.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.3 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:05,274 INFO L168 Benchmark]: Boogie Preprocessor took 217.35 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:05,275 INFO L168 Benchmark]: RCFGBuilder took 7707.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. [2018-11-07 15:44:05,276 INFO L168 Benchmark]: TraceAbstraction took 226428.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:44:05,281 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1750.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 277.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.3 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.35 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7707.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226428.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (34219states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (22781 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 226.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 218.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1276 SDtfs, 13133 SDslu, 871 SDs, 0 SdLazy, 21698 SolverSat, 5977 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 286 GetRequests, 252 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34219occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977020938245428 AbsIntWeakeningRatio, 0.10612244897959183 AbsIntAvgWeakeningVarsNumRemoved, 18.526530612244898 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 187 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 917 NumberOfCodeBlocks, 917 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 911 ConstructedInterpolants, 0 QuantifiedInterpolants, 588797 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 324/326 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown