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_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:45:25,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:45:25,281 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:45:25,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:45:25,293 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:45:25,294 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:45:25,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:45:25,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:45:25,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:45:25,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:45:25,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:45:25,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:45:25,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:45:25,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:45:25,303 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:45:25,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:45:25,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:45:25,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:45:25,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:45:25,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:45:25,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:45:25,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:45:25,315 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:45:25,315 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:45:25,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:45:25,316 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:45:25,317 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:45:25,318 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:45:25,319 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:45:25,320 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:45:25,320 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:45:25,321 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:45:25,321 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:45:25,322 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:45:25,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:45:25,323 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:45:25,324 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:45:25,351 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:45:25,353 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:45:25,354 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:45:25,354 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:45:25,354 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:45:25,355 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:45:25,355 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:45:25,355 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:45:25,355 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:45:25,355 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:45:25,355 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:45:25,356 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:45:25,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:45:25,357 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:45:25,357 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:45:25,357 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:45:25,357 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:45:25,358 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:45:25,358 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:45:25,358 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:45:25,358 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:45:25,358 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:45:25,358 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:45:25,359 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:45:25,359 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:45:25,359 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:45:25,359 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:45:25,359 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:45:25,360 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:45:25,361 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:45:25,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:45:25,362 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:45:25,362 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:45:25,362 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:45:25,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:45:25,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:45:25,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:45:25,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:45:25,438 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:45:25,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label20_false-unreach-call.c [2018-10-24 18:45:25,499 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10e84590d/892f3e6ee2774e91bdca742c7b84c43b/FLAGa6301a544 [2018-10-24 18:45:26,143 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:45:26,145 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label20_false-unreach-call.c [2018-10-24 18:45:26,166 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10e84590d/892f3e6ee2774e91bdca742c7b84c43b/FLAGa6301a544 [2018-10-24 18:45:26,187 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10e84590d/892f3e6ee2774e91bdca742c7b84c43b [2018-10-24 18:45:26,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:45:26,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:45:26,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:45:26,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:45:26,209 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:45:26,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:45:26" (1/1) ... [2018-10-24 18:45:26,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:26, skipping insertion in model container [2018-10-24 18:45:26,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:45:26" (1/1) ... [2018-10-24 18:45:26,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:45:26,330 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:45:27,089 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:45:27,094 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:45:27,357 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:45:27,379 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:45:27,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27 WrapperNode [2018-10-24 18:45:27,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:45:27,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:45:27,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:45:27,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:45:27,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:45:27,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:45:27,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:45:27,719 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:45:27,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... [2018-10-24 18:45:27,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:45:27,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:45:27,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:45:27,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:45:27,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:45:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:45:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:45:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:45:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:45:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:45:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:45:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:45:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:45:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:45:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:45:34,664 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:45:34,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:34 BoogieIcfgContainer [2018-10-24 18:45:34,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:45:34,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:45:34,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:45:34,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:45:34,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:45:26" (1/3) ... [2018-10-24 18:45:34,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:34, skipping insertion in model container [2018-10-24 18:45:34,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:27" (2/3) ... [2018-10-24 18:45:34,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:34, skipping insertion in model container [2018-10-24 18:45:34,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:34" (3/3) ... [2018-10-24 18:45:34,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label20_false-unreach-call.c [2018-10-24 18:45:34,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:45:34,696 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:45:34,714 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:45:34,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:45:34,770 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:45:34,770 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:45:34,770 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:45:34,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:45:34,771 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:45:34,771 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:45:34,771 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:45:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:45:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 18:45:34,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:34,829 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] [2018-10-24 18:45:34,831 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:34,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:34,838 INFO L82 PathProgramCache]: Analyzing trace with hash -730185661, now seen corresponding path program 1 times [2018-10-24 18:45:34,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:34,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:34,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:34,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:35,285 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:45:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:35,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:35,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:45:35,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:35,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:45:35,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:45:35,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:45:35,445 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:45:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:39,112 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:45:39,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:45:39,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-24 18:45:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:39,139 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:45:39,139 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:45:39,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:45:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:45:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:45:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:45:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-24 18:45:39,256 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 31 [2018-10-24 18:45:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:39,257 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-24 18:45:39,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:45:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-24 18:45:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 18:45:39,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:39,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:45:39,267 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:39,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1012571840, now seen corresponding path program 1 times [2018-10-24 18:45:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:39,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:39,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:39,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:39,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:45:39,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:39,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:45:39,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:45:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:45:39,883 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-24 18:45:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:46,813 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-24 18:45:46,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:45:46,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 18:45:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:46,838 INFO L225 Difference]: With dead ends: 2183 [2018-10-24 18:45:46,838 INFO L226 Difference]: Without dead ends: 1445 [2018-10-24 18:45:46,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:45:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-24 18:45:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-24 18:45:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-24 18:45:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-24 18:45:46,930 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 139 [2018-10-24 18:45:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:46,931 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-24 18:45:46,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:45:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-24 18:45:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 18:45:46,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:46,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:45:46,943 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:46,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:46,943 INFO L82 PathProgramCache]: Analyzing trace with hash -770120659, now seen corresponding path program 1 times [2018-10-24 18:45:46,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:46,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:46,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:46,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:46,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:47,329 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:45:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:47,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:47,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:45:47,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:47,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:45:47,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:45:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:45:47,411 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-24 18:45:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:51,743 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-24 18:45:51,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:45:51,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 18:45:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:51,767 INFO L225 Difference]: With dead ends: 3902 [2018-10-24 18:45:51,767 INFO L226 Difference]: Without dead ends: 2484 [2018-10-24 18:45:51,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:45:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-24 18:45:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-24 18:45:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-24 18:45:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-24 18:45:51,848 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 142 [2018-10-24 18:45:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:51,851 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-24 18:45:51,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:45:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-24 18:45:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-24 18:45:51,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:51,862 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:45:51,862 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:51,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:51,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1326532992, now seen corresponding path program 1 times [2018-10-24 18:45:51,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:51,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:51,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:51,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:51,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:52,193 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:45:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 48 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:45:52,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:45:52,625 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:45:52,626 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-10-24 18:45:52,629 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [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 18:45:52,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:45:52,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:45:55,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:45:55,437 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 18:45:55,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:55,450 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:45:57,769 INFO L232 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 77.59% of their original sizes. [2018-10-24 18:45:57,770 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:45:58,061 INFO L413 sIntCurrentIteration]: We have 257 unified AI predicates [2018-10-24 18:45:58,062 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:45:58,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:45:58,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:45:58,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:58,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:45:58,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:45:58,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:45:58,065 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-24 18:46:00,655 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:46:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:55,804 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-24 18:46:55,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:46:55,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2018-10-24 18:46:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:55,819 INFO L225 Difference]: With dead ends: 5282 [2018-10-24 18:46:55,820 INFO L226 Difference]: Without dead ends: 2814 [2018-10-24 18:46:55,828 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:46:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-24 18:46:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-24 18:46:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-24 18:46:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-24 18:46:55,902 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 258 [2018-10-24 18:46:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:55,903 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-24 18:46:55,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:46:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-24 18:46:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-24 18:46:55,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:55,910 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, 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 18:46:55,911 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:55,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1380972291, now seen corresponding path program 1 times [2018-10-24 18:46:55,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:55,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:55,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:55,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:55,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 167 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 18:46:56,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:46:56,523 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:46:56,525 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-10-24 18:46:56,525 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [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 18:46:56,536 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:46:56,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:46:58,915 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:47:06,862 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:47:06,862 INFO L272 AbstractInterpreter]: Visited 126 different actions 365 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:47:06,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:47:06,873 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:47:06,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:47:06,873 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:47:06,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:47:06,882 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:47:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:47:07,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:47:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-24 18:47:07,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:47:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 167 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 18:47:08,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:47:08,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 18:47:08,396 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:47:08,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 18:47:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 18:47:08,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:47:08,398 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 9 states. [2018-10-24 18:47:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:47:23,233 INFO L93 Difference]: Finished difference Result 11117 states and 16850 transitions. [2018-10-24 18:47:23,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-24 18:47:23,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 350 [2018-10-24 18:47:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:47:23,277 INFO L225 Difference]: With dead ends: 11117 [2018-10-24 18:47:23,277 INFO L226 Difference]: Without dead ends: 7304 [2018-10-24 18:47:23,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 733 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-10-24 18:47:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2018-10-24 18:47:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7038. [2018-10-24 18:47:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7038 states. [2018-10-24 18:47:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 7989 transitions. [2018-10-24 18:47:23,540 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 7989 transitions. Word has length 350 [2018-10-24 18:47:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:47:23,540 INFO L481 AbstractCegarLoop]: Abstraction has 7038 states and 7989 transitions. [2018-10-24 18:47:23,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 18:47:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 7989 transitions. [2018-10-24 18:47:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-10-24 18:47:23,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:47:23,557 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:47:23,558 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:47:23,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:47:23,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1331490203, now seen corresponding path program 1 times [2018-10-24 18:47:23,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:47:23,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:47:23,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:47:23,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:47:23,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:47:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:47:24,205 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-24 18:47:24,426 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 18:47:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 182 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 18:47:25,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:47:25,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:47:25,621 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-10-24 18:47:25,621 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [327], [329], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [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], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:47:25,630 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:47:25,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:47:42,687 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:47:42,687 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:47:42,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:47:42,713 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:47:48,995 INFO L232 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 77.72% of their original sizes. [2018-10-24 18:47:48,995 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:47:56,094 INFO L413 sIntCurrentIteration]: We have 497 unified AI predicates [2018-10-24 18:47:56,094 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:47:56,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:47:56,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-10-24 18:47:56,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:47:56,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 18:47:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 18:47:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-10-24 18:47:56,097 INFO L87 Difference]: Start difference. First operand 7038 states and 7989 transitions. Second operand 18 states. [2018-10-24 18:49:18,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:49:19,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:49:19,864 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:49:19,869 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:49:19,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:49:19 BoogieIcfgContainer [2018-10-24 18:49:19,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:49:19,871 INFO L168 Benchmark]: Toolchain (without parser) took 233670.39 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -167.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,872 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:49:19,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1177.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 336.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -850.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,874 INFO L168 Benchmark]: Boogie Preprocessor took 195.30 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,875 INFO L168 Benchmark]: RCFGBuilder took 6751.51 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: 262.2 MB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,875 INFO L168 Benchmark]: TraceAbstraction took 225203.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 322.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:49:19,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1177.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 336.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -850.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.30 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6751.51 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: 262.2 MB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225203.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 322.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was constructing difference of abstraction (7038states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (612 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 225.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 171.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 970 SDtfs, 9386 SDslu, 1191 SDs, 0 SdLazy, 17949 SolverSat, 4281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1567 GetRequests, 1472 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7038occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9967588321224002 AbsIntWeakeningRatio, 0.07692307692307693 AbsIntAvgWeakeningVarsNumRemoved, 397.58885941644564 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 299 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1768 NumberOfCodeBlocks, 1768 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 3823279 SizeOfPredicates, 1 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1267/1718 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown