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/Problem16_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:59:04,982 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:59:04,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:59:04,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:59:04,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:59:05,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:59:05,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:59:05,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:59:05,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:59:05,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:59:05,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:59:05,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:59:05,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:59:05,014 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:59:05,018 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:59:05,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:59:05,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:59:05,028 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:59:05,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:59:05,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:59:05,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:59:05,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:59:05,044 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:59:05,045 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:59:05,045 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:59:05,046 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:59:05,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:59:05,048 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:59:05,049 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:59:05,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:59:05,054 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:59:05,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:59:05,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:59:05,055 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:59:05,057 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:59:05,058 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:59:05,058 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 21:59:05,091 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:59:05,091 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:59:05,093 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:59:05,093 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:59:05,096 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:59:05,096 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:59:05,096 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:59:05,097 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:59:05,097 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:59:05,097 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:59:05,097 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:59:05,097 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:59:05,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:59:05,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:59:05,099 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:59:05,099 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:59:05,099 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:59:05,099 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:59:05,100 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:59:05,100 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:59:05,100 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:59:05,100 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:59:05,100 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:59:05,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:59:05,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:59:05,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:59:05,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:59:05,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:59:05,103 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:59:05,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:59:05,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:59:05,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:59:05,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:59:05,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:59:05,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:59:05,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:59:05,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:59:05,192 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:59:05,192 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:59:05,193 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29_true-unreach-call.c [2018-10-24 21:59:05,255 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/120e43bdf/cf4ba71350ef4b619229374084f51a92/FLAGffbffcca1 [2018-10-24 21:59:05,878 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:59:05,879 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label29_true-unreach-call.c [2018-10-24 21:59:05,894 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/120e43bdf/cf4ba71350ef4b619229374084f51a92/FLAGffbffcca1 [2018-10-24 21:59:05,910 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/120e43bdf/cf4ba71350ef4b619229374084f51a92 [2018-10-24 21:59:05,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:59:05,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:59:05,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:05,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:59:05,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:59:05,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:05" (1/1) ... [2018-10-24 21:59:05,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0c9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:05, skipping insertion in model container [2018-10-24 21:59:05,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:05" (1/1) ... [2018-10-24 21:59:05,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:59:06,041 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:59:06,898 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:06,903 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:59:07,179 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:07,200 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:59:07,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07 WrapperNode [2018-10-24 21:59:07,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:07,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:07,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:59:07,202 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:59:07,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:07,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:59:07,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:59:07,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:59:07,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (1/1) ... [2018-10-24 21:59:07,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:59:07,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:59:07,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:59:07,660 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:59:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (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 21:59:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:59:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:59:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:59:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:59:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:59:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:59:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:59:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:59:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:59:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:59:15,001 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:59:15,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:59:15 BoogieIcfgContainer [2018-10-24 21:59:15,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:59:15,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:59:15,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:59:15,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:59:15,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:59:05" (1/3) ... [2018-10-24 21:59:15,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a41c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:59:15, skipping insertion in model container [2018-10-24 21:59:15,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:07" (2/3) ... [2018-10-24 21:59:15,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a41c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:59:15, skipping insertion in model container [2018-10-24 21:59:15,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:59:15" (3/3) ... [2018-10-24 21:59:15,011 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label29_true-unreach-call.c [2018-10-24 21:59:15,021 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:59:15,031 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:59:15,049 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:59:15,090 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:59:15,091 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:59:15,091 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:59:15,091 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:59:15,091 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:59:15,091 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:59:15,092 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:59:15,092 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:59:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:59:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 21:59:15,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:15,139 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:15,142 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:15,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash 354183419, now seen corresponding path program 1 times [2018-10-24 21:59:15,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:15,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:15,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:15,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:15,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:15,727 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:59:15,806 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 21:59:15,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:15,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:59:15,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:15,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:59:15,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:59:15,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:59:15,834 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:59:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:19,598 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:59:19,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:59:19,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-10-24 21:59:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:19,626 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:59:19,627 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:59:19,637 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 [2018-10-24 21:59:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:59:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:59:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:59:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-24 21:59:19,792 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 53 [2018-10-24 21:59:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:19,793 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-24 21:59:19,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:59:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-24 21:59:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 21:59:19,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:19,806 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:19,807 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:19,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:19,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1132116568, now seen corresponding path program 1 times [2018-10-24 21:59:19,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:19,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:19,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:19,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:19,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:20,323 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:59:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:20,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:20,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:59:20,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:20,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:59:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:59:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:59:20,444 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-24 21:59:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:28,008 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-24 21:59:28,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:28,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-24 21:59:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:28,024 INFO L225 Difference]: With dead ends: 2183 [2018-10-24 21:59:28,024 INFO L226 Difference]: Without dead ends: 1445 [2018-10-24 21:59:28,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:59:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-24 21:59:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-24 21:59:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-24 21:59:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-24 21:59:28,077 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 161 [2018-10-24 21:59:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:28,078 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-24 21:59:28,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:59:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-24 21:59:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 21:59:28,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:28,082 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:28,082 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:28,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:28,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1480605381, now seen corresponding path program 1 times [2018-10-24 21:59:28,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:28,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:28,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:28,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:28,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:28,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:28,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:59:28,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:28,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:59:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:59:28,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:59:28,351 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-24 21:59:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:33,141 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-24 21:59:33,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:33,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 21:59:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:33,157 INFO L225 Difference]: With dead ends: 3902 [2018-10-24 21:59:33,158 INFO L226 Difference]: Without dead ends: 2484 [2018-10-24 21:59:33,163 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 21:59:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-24 21:59:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-24 21:59:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-24 21:59:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-24 21:59:33,227 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 164 [2018-10-24 21:59:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:33,227 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-24 21:59:33,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:59:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-24 21:59:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-24 21:59:33,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:33,233 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:59:33,233 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:33,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1539440952, now seen corresponding path program 1 times [2018-10-24 21:59:33,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:33,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:33,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:33,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:33,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 92 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:59:33,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:59:33,521 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:59:33,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 281 with the following transitions: [2018-10-24 21:59:33,524 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:59:33,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:59:33,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:59:36,251 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:59:36,252 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:59:36,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:36,295 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:59:38,576 INFO L232 lantSequenceWeakener]: Weakened 272 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-24 21:59:38,576 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:59:39,054 INFO L413 sIntCurrentIteration]: We have 279 unified AI predicates [2018-10-24 21:59:39,055 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:59:39,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:59:39,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:59:39,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:39,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:59:39,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:59:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:59:39,060 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-24 21:59:41,506 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:00:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:27,967 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-24 22:00:27,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:00:27,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2018-10-24 22:00:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:27,984 INFO L225 Difference]: With dead ends: 5282 [2018-10-24 22:00:27,984 INFO L226 Difference]: Without dead ends: 2814 [2018-10-24 22:00:27,993 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 280 GetRequests, 274 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 22:00:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-24 22:00:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-24 22:00:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-24 22:00:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-24 22:00:28,060 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 280 [2018-10-24 22:00:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:28,061 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-24 22:00:28,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:00:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-24 22:00:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-24 22:00:28,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:28,069 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:00:28,069 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:28,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 118880219, now seen corresponding path program 1 times [2018-10-24 22:00:28,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:28,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:28,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:28,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:28,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 233 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 22:00:28,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:00:28,707 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:00:28,708 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-10-24 22:00:28,708 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [503], [505], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:00:28,714 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:00:28,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:00:30,853 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:00:43,050 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:00:43,050 INFO L272 AbstractInterpreter]: Visited 125 different actions 481 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:00:43,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:43,059 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:00:46,736 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 78.19% of their original sizes. [2018-10-24 22:00:46,736 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:02:12,475 INFO L413 sIntCurrentIteration]: We have 371 unified AI predicates [2018-10-24 22:02:12,475 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:02:12,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:02:12,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 22:02:12,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:02:12,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 22:02:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 22:02:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:02:12,478 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 22:03:04,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 22:03:04,120 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:03:04,125 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:03:04,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:03:04 BoogieIcfgContainer [2018-10-24 22:03:04,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:03:04,127 INFO L168 Benchmark]: Toolchain (without parser) took 238205.29 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -708.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,128 INFO L168 Benchmark]: CDTParser took 0.17 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 22:03:04,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1277.53 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,130 INFO L168 Benchmark]: Boogie Preprocessor took 142.14 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,131 INFO L168 Benchmark]: RCFGBuilder took 7343.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.4 MB). Peak memory consumption was 253.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,132 INFO L168 Benchmark]: TraceAbstraction took 229121.95 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -212.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:03:04,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 1277.53 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.14 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7343.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.4 MB). Peak memory consumption was 253.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229121.95 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -212.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (2812states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (321 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 229.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 116.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 756 SDtfs, 5094 SDslu, 518 SDs, 0 SdLazy, 6951 SolverSat, 2226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 682 GetRequests, 487 SyntacticMatches, 156 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 87.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962402452619843 AbsIntWeakeningRatio, 0.08923076923076922 AbsIntAvgWeakeningVarsNumRemoved, 481.5430769230769 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1030 NumberOfCodeBlocks, 1030 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1025 ConstructedInterpolants, 0 QuantifiedInterpolants, 767698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 512/728 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown