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/Problem14_label22_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:29:34,994 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:29:34,996 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:29:35,011 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:29:35,012 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:29:35,015 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:29:35,016 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:29:35,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:29:35,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:29:35,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:29:35,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:29:35,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:29:35,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:29:35,024 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:29:35,025 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:29:35,026 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:29:35,027 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:29:35,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:29:35,036 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:29:35,037 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:29:35,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:29:35,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:29:35,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:29:35,048 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:29:35,048 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:29:35,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:29:35,052 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:29:35,054 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:29:35,056 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:29:35,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:29:35,057 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:29:35,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:29:35,059 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:29:35,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:29:35,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:29:35,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:29:35,061 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 [2018-10-24 18:29:35,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:29:35,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:29:35,084 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:29:35,084 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:29:35,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:29:35,085 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:29:35,085 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:29:35,085 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:29:35,085 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:29:35,086 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:29:35,086 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:29:35,086 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:29:35,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:29:35,087 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:29:35,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:29:35,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:29:35,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:29:35,088 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:29:35,088 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:29:35,088 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:29:35,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:29:35,088 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:29:35,089 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:29:35,089 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:29:35,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:29:35,089 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:29:35,089 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:29:35,089 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:29:35,090 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:29:35,090 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:29:35,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:29:35,090 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:29:35,091 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:29:35,091 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:29:35,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:29:35,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:29:35,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:29:35,179 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:29:35,180 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:29:35,180 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-24 18:29:35,244 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb50c320c/51cf1f9e50f64e7ca9952585d8d4a038/FLAGaa9cf656b [2018-10-24 18:29:35,835 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:29:35,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-24 18:29:35,863 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb50c320c/51cf1f9e50f64e7ca9952585d8d4a038/FLAGaa9cf656b [2018-10-24 18:29:35,880 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb50c320c/51cf1f9e50f64e7ca9952585d8d4a038 [2018-10-24 18:29:35,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:29:35,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:29:35,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:35,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:29:35,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:29:35,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:35" (1/1) ... [2018-10-24 18:29:35,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:35, skipping insertion in model container [2018-10-24 18:29:35,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:35" (1/1) ... [2018-10-24 18:29:35,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:29:36,002 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:29:36,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:36,473 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:29:36,645 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:36,677 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:29:36,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36 WrapperNode [2018-10-24 18:29:36,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:36,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:36,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:29:36,679 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:29:36,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:36,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:29:36,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:29:36,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:29:36,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:36,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (1/1) ... [2018-10-24 18:29:37,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:29:37,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:29:37,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:29:37,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:29:37,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (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 [2018-10-24 18:29:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:29:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:29:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:29:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:29:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:29:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:29:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:29:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:29:40,703 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:29:40,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:40 BoogieIcfgContainer [2018-10-24 18:29:40,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:29:40,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:29:40,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:29:40,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:29:40,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:29:35" (1/3) ... [2018-10-24 18:29:40,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:40, skipping insertion in model container [2018-10-24 18:29:40,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:36" (2/3) ... [2018-10-24 18:29:40,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:40, skipping insertion in model container [2018-10-24 18:29:40,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:40" (3/3) ... [2018-10-24 18:29:40,713 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label22_false-unreach-call_false-termination.c [2018-10-24 18:29:40,724 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:29:40,733 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:29:40,751 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:29:40,793 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:29:40,793 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:29:40,793 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:29:40,794 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:29:40,794 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:29:40,794 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:29:40,794 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:29:40,794 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:29:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:29:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 18:29:40,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:40,832 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] [2018-10-24 18:29:40,837 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:40,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -874290308, now seen corresponding path program 1 times [2018-10-24 18:29:40,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:40,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:40,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:40,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:41,258 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:29:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:41,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:41,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:29:41,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:41,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:29:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:29:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:41,302 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:29:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:43,343 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:29:43,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:29:43,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-24 18:29:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:43,378 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:29:43,378 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:29:43,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:29:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:29:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:29:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:29:43,476 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 20 [2018-10-24 18:29:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:43,477 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:29:43,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:29:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:29:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 18:29:43,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:43,483 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:29:43,484 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:43,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash 473181535, now seen corresponding path program 1 times [2018-10-24 18:29:43,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:43,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:43,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:43,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:43,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:43,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:43,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:29:43,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:43,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:29:43,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:29:43,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:29:43,790 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:29:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:45,892 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:29:45,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:29:45,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 18:29:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:45,902 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:29:45,902 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:29:45,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:29:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:29:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:29:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:29:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:29:45,950 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 95 [2018-10-24 18:29:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:45,950 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:29:45,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:29:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:29:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:29:45,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:45,959 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:29:45,960 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:45,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1939267164, now seen corresponding path program 1 times [2018-10-24 18:29:45,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:45,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:45,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:45,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:45,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:46,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:46,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:29:46,251 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:46,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:29:46,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:29:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:46,253 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 18:29:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:50,574 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-10-24 18:29:50,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:29:50,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-24 18:29:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:50,590 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 18:29:50,590 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 18:29:50,597 INFO L605 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 [2018-10-24 18:29:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 18:29:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 18:29:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 18:29:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-10-24 18:29:50,671 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 104 [2018-10-24 18:29:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:50,672 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-10-24 18:29:50,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:29:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-10-24 18:29:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 18:29:50,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:50,692 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:50,695 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:50,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1125198180, now seen corresponding path program 1 times [2018-10-24 18:29:50,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:50,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:50,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:50,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:50,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 18:29:51,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:51,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:29:51,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:51,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:29:51,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:29:51,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:51,035 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 3 states. [2018-10-24 18:29:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:52,550 INFO L93 Difference]: Finished difference Result 4928 states and 7680 transitions. [2018-10-24 18:29:52,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:29:52,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-24 18:29:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:52,578 INFO L225 Difference]: With dead ends: 4928 [2018-10-24 18:29:52,578 INFO L226 Difference]: Without dead ends: 3203 [2018-10-24 18:29:52,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2018-10-24 18:29:52,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3203. [2018-10-24 18:29:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2018-10-24 18:29:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4752 transitions. [2018-10-24 18:29:52,709 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4752 transitions. Word has length 214 [2018-10-24 18:29:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:52,710 INFO L481 AbstractCegarLoop]: Abstraction has 3203 states and 4752 transitions. [2018-10-24 18:29:52,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:29:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4752 transitions. [2018-10-24 18:29:52,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 18:29:52,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:52,721 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:29:52,722 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:52,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1192909764, now seen corresponding path program 1 times [2018-10-24 18:29:52,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:52,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:52,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:52,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:52,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:53,291 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 18:29:53,991 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-24 18:29:54,238 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-24 18:29:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:54,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:54,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:54,775 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-24 18:29:54,778 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:54,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:54,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:29:57,631 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:30:00,212 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:30:00,213 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:30:00,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:00,257 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:30:02,876 INFO L232 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 77.4% of their original sizes. [2018-10-24 18:30:02,877 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:30:03,299 INFO L413 sIntCurrentIteration]: We have 225 unified AI predicates [2018-10-24 18:30:03,299 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:30:03,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:30:03,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 18:30:03,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:30:03,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:30:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:30:03,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:30:03,302 INFO L87 Difference]: Start difference. First operand 3203 states and 4752 transitions. Second operand 7 states. [2018-10-24 18:30:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:30:33,922 INFO L93 Difference]: Finished difference Result 6585 states and 9782 transitions. [2018-10-24 18:30:33,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:30:33,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-10-24 18:30:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:30:33,947 INFO L225 Difference]: With dead ends: 6585 [2018-10-24 18:30:33,947 INFO L226 Difference]: Without dead ends: 3388 [2018-10-24 18:30:33,968 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:30:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-10-24 18:30:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2018-10-24 18:30:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2018-10-24 18:30:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4943 transitions. [2018-10-24 18:30:34,068 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4943 transitions. Word has length 226 [2018-10-24 18:30:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:30:34,069 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 4943 transitions. [2018-10-24 18:30:34,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:30:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4943 transitions. [2018-10-24 18:30:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-24 18:30:34,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:30:34,080 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:30:34,081 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:30:34,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:34,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1312706291, now seen corresponding path program 1 times [2018-10-24 18:30:34,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:30:34,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:30:34,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:30:34,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:30:34,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:30:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:30:34,607 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:30:34,778 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:30:35,011 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:30:35,293 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 18:30:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 127 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:30:35,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:30:35,702 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:30:35,703 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-24 18:30:35,703 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:30:35,709 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:30:35,710 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:30:37,816 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:30:42,507 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:30:42,507 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:30:42,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:42,517 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:30:44,641 INFO L232 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 77.78% of their original sizes. [2018-10-24 18:30:44,642 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:31:05,570 INFO L413 sIntCurrentIteration]: We have 310 unified AI predicates [2018-10-24 18:31:05,570 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:31:05,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:31:05,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 18:31:05,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:31:05,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 18:31:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 18:31:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:31:05,572 INFO L87 Difference]: Start difference. First operand 3386 states and 4943 transitions. Second operand 24 states. [2018-10-24 18:32:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:44,335 INFO L93 Difference]: Finished difference Result 7146 states and 10555 transitions. [2018-10-24 18:32:44,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:32:44,335 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 311 [2018-10-24 18:32:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:44,359 INFO L225 Difference]: With dead ends: 7146 [2018-10-24 18:32:44,360 INFO L226 Difference]: Without dead ends: 3949 [2018-10-24 18:32:44,381 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 324 GetRequests, 268 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 18:32:44,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2018-10-24 18:32:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3945. [2018-10-24 18:32:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3945 states. [2018-10-24 18:32:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 5534 transitions. [2018-10-24 18:32:44,595 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 5534 transitions. Word has length 311 [2018-10-24 18:32:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:44,596 INFO L481 AbstractCegarLoop]: Abstraction has 3945 states and 5534 transitions. [2018-10-24 18:32:44,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 18:32:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 5534 transitions. [2018-10-24 18:32:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-24 18:32:44,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:44,609 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:32:44,609 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:44,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash 535151199, now seen corresponding path program 1 times [2018-10-24 18:32:44,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:44,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:44,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:44,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:44,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 52 proven. 279 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:32:45,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:45,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:32:45,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-24 18:32:45,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:32:45,698 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:32:45,698 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:32:47,487 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:32:53,502 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:32:53,502 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:32:53,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:53,508 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:32:55,438 INFO L232 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 78% of their original sizes. [2018-10-24 18:32:55,439 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:02,284 INFO L413 sIntCurrentIteration]: We have 336 unified AI predicates [2018-10-24 18:33:02,284 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:02,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:02,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-10-24 18:33:02,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:02,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 18:33:02,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 18:33:02,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-10-24 18:33:02,286 INFO L87 Difference]: Start difference. First operand 3945 states and 5534 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 18:33:29,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:33:29,871 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:33:29,876 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:33:29,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:33:29 BoogieIcfgContainer [2018-10-24 18:33:29,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:33:29,877 INFO L168 Benchmark]: Toolchain (without parser) took 233984.11 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 297.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,879 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. [2018-10-24 18:33:29,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 246.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,881 INFO L168 Benchmark]: Boogie Preprocessor took 89.99 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,883 INFO L168 Benchmark]: RCFGBuilder took 3688.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 132.6 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,884 INFO L168 Benchmark]: TraceAbstraction took 229171.26 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 194.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:33:29,889 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 781.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 246.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.99 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3688.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 132.6 MB). Peak memory consumption was 132.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229171.26 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 194.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was constructing difference of abstraction (3945states) and FLOYD_HOARE automaton (currently 9 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (88 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 229.0s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 167.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1202 SDtfs, 5090 SDslu, 1023 SDs, 0 SdLazy, 7541 SolverSat, 1440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 916 GetRequests, 815 SyntacticMatches, 24 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 34.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3945occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9955469308973526 AbsIntWeakeningRatio, 0.10332950631458095 AbsIntAvgWeakeningVarsNumRemoved, 813.7301951779564 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 4389651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 439/890 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown