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_label13_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:25:18,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:25:18,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:25:18,104 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:25:18,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:25:18,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:25:18,107 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:25:18,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:25:18,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:25:18,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:25:18,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:25:18,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:25:18,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:25:18,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:25:18,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:25:18,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:25:18,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:25:18,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:25:18,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:25:18,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:25:18,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:25:18,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:25:18,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:25:18,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:25:18,136 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:25:18,137 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:25:18,138 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:25:18,139 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:25:18,140 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:25:18,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:25:18,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:25:18,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:25:18,143 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:25:18,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:25:18,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:25:18,145 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:25:18,145 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 [2018-10-23 22:25:18,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:25:18,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:25:18,163 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:25:18,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:25:18,164 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:25:18,164 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:25:18,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:25:18,164 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:25:18,165 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:25:18,165 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:25:18,165 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:25:18,165 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:25:18,166 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:25:18,166 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:25:18,166 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:25:18,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:25:18,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:25:18,167 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:25:18,167 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:25:18,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:25:18,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:25:18,168 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:25:18,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:25:18,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:25:18,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:25:18,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:25:18,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:25:18,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:25:18,170 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:25:18,170 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:25:18,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:25:18,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:25:18,170 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:25:18,171 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:25:18,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:25:18,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:25:18,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:25:18,261 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:25:18,262 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:25:18,262 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-10-23 22:25:18,333 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8dc075e8b/443874ad3af247fd8dc3f3aab7766fe0/FLAG7693d034c [2018-10-23 22:25:18,896 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:25:18,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-10-23 22:25:18,912 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8dc075e8b/443874ad3af247fd8dc3f3aab7766fe0/FLAG7693d034c [2018-10-23 22:25:18,938 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8dc075e8b/443874ad3af247fd8dc3f3aab7766fe0 [2018-10-23 22:25:18,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:25:18,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:25:18,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:18,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:25:18,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:25:18,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:18" (1/1) ... [2018-10-23 22:25:18,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e6c1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:18, skipping insertion in model container [2018-10-23 22:25:18,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:25:18" (1/1) ... [2018-10-23 22:25:18,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:25:19,058 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:25:19,564 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:19,569 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:25:19,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:25:19,750 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:25:19,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19 WrapperNode [2018-10-23 22:25:19,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:25:19,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:19,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:25:19,753 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:25:19,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:19,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:19,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:25:19,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:25:19,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:25:19,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:25:20,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (1/1) ... [2018-10-23 22:25:20,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:25:20,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:25:20,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:25:20,126 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:25:20,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (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 [2018-10-23 22:25:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:25:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:25:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:25:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:25:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:25:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:25:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:25:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:25:23,964 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:25:23,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:23 BoogieIcfgContainer [2018-10-23 22:25:23,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:25:23,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:25:23,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:25:23,970 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:25:23,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:25:18" (1/3) ... [2018-10-23 22:25:23,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:23, skipping insertion in model container [2018-10-23 22:25:23,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:25:19" (2/3) ... [2018-10-23 22:25:23,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:25:23, skipping insertion in model container [2018-10-23 22:25:23,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:25:23" (3/3) ... [2018-10-23 22:25:23,974 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label13_false-unreach-call_false-termination.c [2018-10-23 22:25:23,984 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:25:23,993 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:25:24,012 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:25:24,063 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:25:24,064 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:25:24,064 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:25:24,064 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:25:24,064 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:25:24,064 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:25:24,065 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:25:24,065 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:25:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:25:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 22:25:24,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:24,108 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] [2018-10-23 22:25:24,110 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:24,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1859951889, now seen corresponding path program 1 times [2018-10-23 22:25:24,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:24,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:24,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:24,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:24,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:24,564 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:25:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:24,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:24,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:25:24,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:24,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:25:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:25:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:24,698 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:25:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:26,561 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:25:26,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:25:26,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-23 22:25:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:26,584 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:25:26,584 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:25:26,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:25:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:25:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:25:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:25:26,686 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 31 [2018-10-23 22:25:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:26,687 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:25:26,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:25:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:25:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 22:25:26,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:26,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:26,694 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:26,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash -984490100, now seen corresponding path program 1 times [2018-10-23 22:25:26,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:26,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:26,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:26,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:26,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:27,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:27,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:25:27,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:27,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:25:27,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:25:27,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:25:27,015 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:25:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:30,684 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-23 22:25:30,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:30,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-23 22:25:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:30,700 INFO L225 Difference]: With dead ends: 1588 [2018-10-23 22:25:30,700 INFO L226 Difference]: Without dead ends: 1160 [2018-10-23 22:25:30,707 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 [2018-10-23 22:25:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-23 22:25:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-23 22:25:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-23 22:25:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-23 22:25:30,779 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 101 [2018-10-23 22:25:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:30,780 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-23 22:25:30,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:25:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-23 22:25:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:25:30,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:30,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:30,790 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:30,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:30,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1471379143, now seen corresponding path program 1 times [2018-10-23 22:25:30,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:30,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:30,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:30,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:30,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:31,147 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:25:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:31,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:31,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:31,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:31,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:31,391 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-23 22:25:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:33,977 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-23 22:25:33,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:33,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-23 22:25:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:34,002 INFO L225 Difference]: With dead ends: 2716 [2018-10-23 22:25:34,003 INFO L226 Difference]: Without dead ends: 1569 [2018-10-23 22:25:34,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-23 22:25:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-23 22:25:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-23 22:25:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-23 22:25:34,080 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 102 [2018-10-23 22:25:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:34,080 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-23 22:25:34,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-23 22:25:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 22:25:34,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:34,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:34,089 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:34,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash -552645141, now seen corresponding path program 1 times [2018-10-23 22:25:34,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:34,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:34,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:34,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:34,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:34,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:34,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:34,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:34,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:34,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:34,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:34,275 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-23 22:25:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:36,953 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-23 22:25:36,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:25:36,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-10-23 22:25:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:36,974 INFO L225 Difference]: With dead ends: 4906 [2018-10-23 22:25:36,975 INFO L226 Difference]: Without dead ends: 3374 [2018-10-23 22:25:36,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-23 22:25:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-23 22:25:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-23 22:25:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-23 22:25:37,101 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 104 [2018-10-23 22:25:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:37,101 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-23 22:25:37,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-23 22:25:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-23 22:25:37,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:37,108 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 22:25:37,108 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:37,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1003054539, now seen corresponding path program 1 times [2018-10-23 22:25:37,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:37,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:37,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:37,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:37,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-23 22:25:37,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:37,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:25:37,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:37,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:25:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:25:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:25:37,430 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-23 22:25:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:40,327 INFO L93 Difference]: Finished difference Result 8796 states and 12469 transitions. [2018-10-23 22:25:40,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:25:40,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2018-10-23 22:25:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:40,363 INFO L225 Difference]: With dead ends: 8796 [2018-10-23 22:25:40,364 INFO L226 Difference]: Without dead ends: 5539 [2018-10-23 22:25:40,392 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 [2018-10-23 22:25:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-10-23 22:25:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5539. [2018-10-23 22:25:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2018-10-23 22:25:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7494 transitions. [2018-10-23 22:25:40,610 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7494 transitions. Word has length 189 [2018-10-23 22:25:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:40,611 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7494 transitions. [2018-10-23 22:25:40,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:25:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7494 transitions. [2018-10-23 22:25:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-23 22:25:40,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:40,626 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 22:25:40,626 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:40,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1300699199, now seen corresponding path program 1 times [2018-10-23 22:25:40,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:40,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:40,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:40,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:40,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:41,003 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-23 22:25:41,281 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-23 22:25:41,804 WARN L179 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-10-23 22:25:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:42,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:25:42,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:25:42,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-23 22:25:42,506 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [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], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:25:42,595 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:25:42,596 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:25:45,867 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:25:47,065 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:25:47,067 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:25:47,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:47,111 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:25:49,673 INFO L232 lantSequenceWeakener]: Weakened 241 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-23 22:25:49,673 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:25:49,942 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:25:49,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:25:49,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-23 22:25:49,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:49,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:25:49,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:25:49,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:25:49,946 INFO L87 Difference]: Start difference. First operand 5539 states and 7494 transitions. Second operand 7 states. [2018-10-23 22:26:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:04,099 INFO L93 Difference]: Finished difference Result 11257 states and 15211 transitions. [2018-10-23 22:26:04,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:26:04,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2018-10-23 22:26:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:04,127 INFO L225 Difference]: With dead ends: 11257 [2018-10-23 22:26:04,127 INFO L226 Difference]: Without dead ends: 5724 [2018-10-23 22:26:04,150 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:26:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2018-10-23 22:26:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5722. [2018-10-23 22:26:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5722 states. [2018-10-23 22:26:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7685 transitions. [2018-10-23 22:26:04,299 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7685 transitions. Word has length 249 [2018-10-23 22:26:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 5722 states and 7685 transitions. [2018-10-23 22:26:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:26:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7685 transitions. [2018-10-23 22:26:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-23 22:26:04,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:04,319 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:26:04,320 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:04,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1735802637, now seen corresponding path program 1 times [2018-10-23 22:26:04,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:04,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:04,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:04,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:04,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:04,989 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:26:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 160 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:26:05,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:26:05,542 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:26:05,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-10-23 22:26:05,543 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [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], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:26:05,549 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:26:05,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:26:08,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:26:12,383 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:26:12,384 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. [2018-10-23 22:26:12,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:12,392 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:26:15,484 INFO L232 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-23 22:26:15,484 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:26:53,470 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:26:53,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:26:53,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-23 22:26:53,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:26:53,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 22:26:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 22:26:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:26:53,472 INFO L87 Difference]: Start difference. First operand 5722 states and 7685 transitions. Second operand 24 states. [2018-10-23 22:29:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:02,668 INFO L93 Difference]: Finished difference Result 11818 states and 15810 transitions. [2018-10-23 22:29:02,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 22:29:02,668 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 334 [2018-10-23 22:29:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:02,696 INFO L225 Difference]: With dead ends: 11818 [2018-10-23 22:29:02,696 INFO L226 Difference]: Without dead ends: 5727 [2018-10-23 22:29:02,719 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 347 GetRequests, 271 SyntacticMatches, 40 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-23 22:29:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2018-10-23 22:29:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 5722. [2018-10-23 22:29:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5722 states. [2018-10-23 22:29:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7679 transitions. [2018-10-23 22:29:02,913 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7679 transitions. Word has length 334 [2018-10-23 22:29:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:02,914 INFO L481 AbstractCegarLoop]: Abstraction has 5722 states and 7679 transitions. [2018-10-23 22:29:02,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-23 22:29:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7679 transitions. [2018-10-23 22:29:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-23 22:29:02,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:02,932 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:02,933 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:02,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:02,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1103940409, now seen corresponding path program 1 times [2018-10-23 22:29:02,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:02,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:02,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:02,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:02,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:03,452 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 85 proven. 303 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:29:04,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:04,261 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:04,261 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-10-23 22:29:04,262 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [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], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:04,267 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:04,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:06,045 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:10,910 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:10,910 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. [2018-10-23 22:29:10,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:10,920 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-23 22:29:14,582 INFO L232 lantSequenceWeakener]: Weakened 345 states. On average, predicates are now at 77.65% of their original sizes. [2018-10-23 22:29:14,583 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:14,657 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:29:14,662 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:29:14,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:29:14 BoogieIcfgContainer [2018-10-23 22:29:14,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:29:14,664 INFO L168 Benchmark]: Toolchain (without parser) took 235709.45 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -553.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:29:14,665 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 22:29:14,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.12 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. [2018-10-23 22:29:14,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 242.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:14,668 INFO L168 Benchmark]: Boogie Preprocessor took 129.64 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:14,669 INFO L168 Benchmark]: RCFGBuilder took 3840.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.1 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:29:14,670 INFO L168 Benchmark]: TraceAbstraction took 230696.28 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 78.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 22:29:14,680 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 793.12 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 242.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.64 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3840.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.1 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230696.28 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 78.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was analyzing trace of length 361 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 157.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 988 SDtfs, 5761 SDslu, 1128 SDs, 0 SdLazy, 9485 SolverSat, 1580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 634 GetRequests, 526 SyntacticMatches, 44 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 43.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5722occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.995873805118717 AbsIntWeakeningRatio, 0.09574468085106383 AbsIntAvgWeakeningVarsNumRemoved, 393.1063829787234 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 156 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1110 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1103 ConstructedInterpolants, 0 QuantifiedInterpolants, 2592656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 510/694 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown