java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:41:33,842 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:41:33,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:41:33,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:41:33,867 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:41:33,869 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:41:33,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:41:33,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:41:33,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:41:33,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:41:33,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:41:33,887 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:41:33,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:41:33,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:41:33,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:41:33,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:41:33,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:41:33,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:41:33,905 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:41:33,906 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:41:33,907 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:41:33,909 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:41:33,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:41:33,924 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:41:33,924 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:41:33,925 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:41:33,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:41:33,927 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:41:33,954 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:41:33,954 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:41:33,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:41:33,956 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:41:33,956 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:41:33,957 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:41:33,957 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:41:33,957 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:41:33,957 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:41:33,958 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:41:33,958 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:41:33,958 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:41:33,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:41:33,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:41:33,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:41:33,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:41:33,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:41:33,961 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:41:33,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:41:33,961 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:41:33,962 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:41:33,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:41:33,962 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:41:33,962 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:41:33,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:41:33,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:41:33,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:41:33,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:41:33,964 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:41:33,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:41:33,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:41:33,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:41:33,965 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:41:33,965 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:41:34,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:41:34,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:41:34,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:41:34,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:41:34,057 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:41:34,058 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-10-27 03:41:34,131 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f29b7a233/816f43d475e546008318004e06728e6b/FLAG36d880af6 [2018-10-27 03:41:34,963 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:41:34,965 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-10-27 03:41:34,999 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f29b7a233/816f43d475e546008318004e06728e6b/FLAG36d880af6 [2018-10-27 03:41:35,023 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f29b7a233/816f43d475e546008318004e06728e6b [2018-10-27 03:41:35,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:41:35,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:41:35,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:41:35,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:41:35,050 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:41:35,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:41:35" (1/1) ... [2018-10-27 03:41:35,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:35, skipping insertion in model container [2018-10-27 03:41:35,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:41:35" (1/1) ... [2018-10-27 03:41:35,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:41:35,208 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:41:36,302 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:41:36,308 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:41:36,808 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:41:36,838 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:41:36,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36 WrapperNode [2018-10-27 03:41:36,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:41:36,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:41:36,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:41:36,841 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:41:36,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:36,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:41:37,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:41:37,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:41:37,253 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:41:37,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... [2018-10-27 03:41:37,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:41:37,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:41:37,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:41:37,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:41:37,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 03:41:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:41:37,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:41:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:41:37,621 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:41:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:41:37,621 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:41:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:41:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:41:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:41:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:41:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:41:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:41:45,101 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:41:45,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:41:45 BoogieIcfgContainer [2018-10-27 03:41:45,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:41:45,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:41:45,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:41:45,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:41:45,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:41:35" (1/3) ... [2018-10-27 03:41:45,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:41:45, skipping insertion in model container [2018-10-27 03:41:45,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:41:36" (2/3) ... [2018-10-27 03:41:45,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:41:45, skipping insertion in model container [2018-10-27 03:41:45,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:41:45" (3/3) ... [2018-10-27 03:41:45,111 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label18_true-unreach-call.c [2018-10-27 03:41:45,120 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:41:45,129 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:41:45,146 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:41:45,190 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:41:45,190 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:41:45,191 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:41:45,191 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:41:45,191 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:41:45,191 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:41:45,191 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:41:45,192 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:41:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:41:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-27 03:41:45,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:41:45,246 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:41:45,249 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:41:45,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:41:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash -502294996, now seen corresponding path program 1 times [2018-10-27 03:41:45,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:41:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:45,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:41:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:45,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:41:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:41:45,796 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:41:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:41:45,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:41:45,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:41:45,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:41:45,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:41:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:41:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:41:45,946 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:41:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:41:52,859 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:41:52,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:41:52,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-10-27 03:41:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:41:52,901 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:41:52,902 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:41:52,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:41:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:41:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:41:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:41:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 03:41:53,106 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 64 [2018-10-27 03:41:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:41:53,106 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 03:41:53,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:41:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 03:41:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 03:41:53,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:41:53,116 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:41:53,116 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:41:53,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:41:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1983682478, now seen corresponding path program 1 times [2018-10-27 03:41:53,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:41:53,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:53,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:41:53,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:41:53,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:41:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:41:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:41:53,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:41:53,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:41:53,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:41:53,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:41:53,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:41:53,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:41:53,440 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 03:42:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:42:01,812 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-10-27 03:42:01,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:42:01,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-27 03:42:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:42:01,836 INFO L225 Difference]: With dead ends: 4416 [2018-10-27 03:42:01,837 INFO L226 Difference]: Without dead ends: 2948 [2018-10-27 03:42:01,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:42:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-10-27 03:42:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-10-27 03:42:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-27 03:42:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-10-27 03:42:01,937 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 154 [2018-10-27 03:42:01,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:42:01,938 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-10-27 03:42:01,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:42:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-10-27 03:42:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 03:42:01,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:42:01,944 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:42:01,944 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:42:01,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:42:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash 119738927, now seen corresponding path program 1 times [2018-10-27 03:42:01,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:42:01,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:01,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:42:01,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:01,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:42:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:42:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:42:02,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:42:02,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:42:02,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:42:02,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:42:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:42:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:42:02,239 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-10-27 03:42:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:42:14,029 INFO L93 Difference]: Finished difference Result 11796 states and 22934 transitions. [2018-10-27 03:42:14,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:42:14,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-27 03:42:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:42:14,102 INFO L225 Difference]: With dead ends: 11796 [2018-10-27 03:42:14,103 INFO L226 Difference]: Without dead ends: 8880 [2018-10-27 03:42:14,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:42:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2018-10-27 03:42:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8810. [2018-10-27 03:42:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8810 states. [2018-10-27 03:42:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 14107 transitions. [2018-10-27 03:42:14,409 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 14107 transitions. Word has length 155 [2018-10-27 03:42:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:42:14,410 INFO L481 AbstractCegarLoop]: Abstraction has 8810 states and 14107 transitions. [2018-10-27 03:42:14,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:42:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 14107 transitions. [2018-10-27 03:42:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-27 03:42:14,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:42:14,418 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 03:42:14,418 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:42:14,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:42:14,419 INFO L82 PathProgramCache]: Analyzing trace with hash -720272287, now seen corresponding path program 1 times [2018-10-27 03:42:14,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:42:14,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:14,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:42:14,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:42:14,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:42:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:42:14,768 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:42:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:42:14,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:42:14,927 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:42:14,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-27 03:42:14,930 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], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:42:15,000 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:42:15,001 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:42:17,110 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:42:17,112 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:42:17,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:42:17,125 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:42:18,962 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.33% of their original sizes. [2018-10-27 03:42:18,962 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:42:19,244 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-10-27 03:42:19,244 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:42:19,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:42:19,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-27 03:42:19,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:42:19,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:42:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:42:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:42:19,247 INFO L87 Difference]: Start difference. First operand 8810 states and 14107 transitions. Second operand 7 states. [2018-10-27 03:42:22,200 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:43:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:43:07,481 INFO L93 Difference]: Finished difference Result 18319 states and 29116 transitions. [2018-10-27 03:43:07,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:43:07,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-10-27 03:43:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:43:07,529 INFO L225 Difference]: With dead ends: 18319 [2018-10-27 03:43:07,530 INFO L226 Difference]: Without dead ends: 9515 [2018-10-27 03:43:07,559 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:43:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2018-10-27 03:43:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 9513. [2018-10-27 03:43:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-10-27 03:43:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14819 transitions. [2018-10-27 03:43:07,922 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14819 transitions. Word has length 225 [2018-10-27 03:43:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:43:07,923 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14819 transitions. [2018-10-27 03:43:07,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:43:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14819 transitions. [2018-10-27 03:43:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-27 03:43:07,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:07,938 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:43:07,939 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:07,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash -572310658, now seen corresponding path program 1 times [2018-10-27 03:43:07,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:07,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:07,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:07,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:07,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:08,510 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:43:08,706 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:43:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 230 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:43:09,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:43:09,257 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:43:09,258 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-10-27 03:43:09,258 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], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [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], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:43:09,267 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:43:09,268 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:43:19,930 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:43:19,930 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:43:19,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:19,939 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:43:23,331 INFO L227 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-27 03:43:23,332 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:44:34,638 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-10-27 03:44:34,639 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:44:34,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:44:34,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2018-10-27 03:44:34,640 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:44:34,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 03:44:34,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 03:44:34,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 03:44:34,641 INFO L87 Difference]: Start difference. First operand 9513 states and 14819 transitions. Second operand 14 states. Received shutdown request... [2018-10-27 03:45:31,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 03:45:31,365 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:45:31,370 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:45:31,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:45:31 BoogieIcfgContainer [2018-10-27 03:45:31,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:45:31,371 INFO L168 Benchmark]: Toolchain (without parser) took 236330.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 03:45:31,373 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 03:45:31,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1796.87 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. [2018-10-27 03:45:31,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 411.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:45:31,375 INFO L168 Benchmark]: Boogie Preprocessor took 286.13 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:45:31,376 INFO L168 Benchmark]: RCFGBuilder took 7563.28 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: 491.2 MB). Peak memory consumption was 491.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:45:31,377 INFO L168 Benchmark]: TraceAbstraction took 226267.08 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 2.4 GB in the end (delta: -724.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 03:45:31,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1796.87 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 411.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.13 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7563.28 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: 491.2 MB). Peak memory consumption was 491.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226267.08 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 2.4 GB in the end (delta: -724.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (9513states) and FLOYD_HOARE automaton (currently 9 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (186 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 226.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 132.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1171 SDtfs, 8666 SDslu, 515 SDs, 0 SdLazy, 14059 SolverSat, 4404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 666 GetRequests, 489 SyntacticMatches, 139 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 71.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961514321579368 AbsIntWeakeningRatio, 0.09133858267716535 AbsIntAvgWeakeningVarsNumRemoved, 491.2062992125984 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 1478553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 468/700 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown