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_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:48:35,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:48:35,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:48:35,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:48:35,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:48:35,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:48:35,184 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:48:35,186 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:48:35,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:48:35,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:48:35,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:48:35,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:48:35,195 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:48:35,196 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:48:35,200 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:48:35,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:48:35,205 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:48:35,207 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:48:35,211 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:48:35,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:48:35,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:48:35,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:48:35,223 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:48:35,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:48:35,224 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:48:35,225 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:48:35,226 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:48:35,226 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:48:35,229 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:48:35,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:48:35,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:48:35,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:48:35,232 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:48:35,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:48:35,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:48:35,235 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:48:35,235 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 18:48:35,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:48:35,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:48:35,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:48:35,269 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:48:35,269 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:48:35,270 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:48:35,270 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:48:35,270 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:48:35,270 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:48:35,270 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:48:35,271 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:48:35,271 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:48:35,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:48:35,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:48:35,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:48:35,272 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:48:35,272 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:48:35,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:48:35,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:48:35,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:48:35,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:48:35,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:48:35,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:48:35,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:48:35,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:48:35,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:48:35,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:48:35,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:48:35,276 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:48:35,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:48:35,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:48:35,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:48:35,367 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:48:35,367 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:48:35,368 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-10-24 18:48:35,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9473e337e/a71599340487469ab3227520cf534c7e/FLAG27deb4b38 [2018-10-24 18:48:36,170 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:48:36,172 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-10-24 18:48:36,194 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9473e337e/a71599340487469ab3227520cf534c7e/FLAG27deb4b38 [2018-10-24 18:48:36,214 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9473e337e/a71599340487469ab3227520cf534c7e [2018-10-24 18:48:36,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:48:36,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:48:36,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:48:36,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:48:36,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:48:36,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:48:36" (1/1) ... [2018-10-24 18:48:36,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4a2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:36, skipping insertion in model container [2018-10-24 18:48:36,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:48:36" (1/1) ... [2018-10-24 18:48:36,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:48:36,338 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:48:37,026 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:48:37,031 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:48:37,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:48:37,310 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:48:37,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37 WrapperNode [2018-10-24 18:48:37,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:48:37,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:48:37,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:48:37,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:48:37,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:48:37,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:48:37,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:48:37,627 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:48:37,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (1/1) ... [2018-10-24 18:48:37,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:48:37,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:48:37,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:48:37,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:48:37,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (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 18:48:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:48:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:48:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:48:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:48:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:48:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:48:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:48:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:48:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:48:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:48:44,468 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:48:44,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:48:44 BoogieIcfgContainer [2018-10-24 18:48:44,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:48:44,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:48:44,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:48:44,474 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:48:44,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:48:36" (1/3) ... [2018-10-24 18:48:44,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727485d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:48:44, skipping insertion in model container [2018-10-24 18:48:44,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:48:37" (2/3) ... [2018-10-24 18:48:44,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727485d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:48:44, skipping insertion in model container [2018-10-24 18:48:44,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:48:44" (3/3) ... [2018-10-24 18:48:44,478 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label43_false-unreach-call.c [2018-10-24 18:48:44,488 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:48:44,497 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:48:44,513 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:48:44,555 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:48:44,555 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:48:44,556 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:48:44,556 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:48:44,556 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:48:44,556 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:48:44,556 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:48:44,557 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:48:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:48:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 18:48:44,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:48:44,605 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:48:44,607 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:48:44,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:48:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 447035884, now seen corresponding path program 1 times [2018-10-24 18:48:44,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:48:44,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:44,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:48:44,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:44,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:48:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:48:44,997 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:48:45,095 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 18:48:45,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:48:45,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:48:45,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:48:45,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:48:45,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:48:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:48:45,124 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:48:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:48:50,582 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:48:50,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:48:50,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-24 18:48:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:48:50,615 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:48:50,615 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:48:50,627 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 18:48:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:48:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:48:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:48:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-24 18:48:50,735 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 16 [2018-10-24 18:48:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:48:50,736 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-24 18:48:50,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:48:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-24 18:48:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 18:48:50,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:48:50,748 INFO L375 BasicCegarLoop]: trace histogram [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 18:48:50,748 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:48:50,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:48:50,752 INFO L82 PathProgramCache]: Analyzing trace with hash 803475559, now seen corresponding path program 1 times [2018-10-24 18:48:50,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:48:50,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:50,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:48:50,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:50,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:48:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:48:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:48:51,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:48:51,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:48:51,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:48:51,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:48:51,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:48:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:48:51,176 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-24 18:48:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:48:58,848 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-24 18:48:58,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:48:58,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 18:48:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:48:58,878 INFO L225 Difference]: With dead ends: 2184 [2018-10-24 18:48:58,879 INFO L226 Difference]: Without dead ends: 1446 [2018-10-24 18:48:58,884 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 18:48:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-24 18:48:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-24 18:48:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-24 18:48:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-24 18:48:58,956 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 109 [2018-10-24 18:48:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:48:58,957 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-24 18:48:58,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:48:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-24 18:48:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 18:48:58,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:48:58,973 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 18:48:58,974 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:48:58,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:48:58,974 INFO L82 PathProgramCache]: Analyzing trace with hash -983617648, now seen corresponding path program 1 times [2018-10-24 18:48:58,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:48:58,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:58,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:48:58,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:48:58,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:48:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:48:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:48:59,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:48:59,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:48:59,290 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-24 18:48:59,292 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [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], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:48:59,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:48:59,367 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:49:01,881 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:49:01,883 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:49:01,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:49:01,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:49:03,961 INFO L232 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 77.32% of their original sizes. [2018-10-24 18:49:03,962 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:49:04,260 INFO L413 sIntCurrentIteration]: We have 219 unified AI predicates [2018-10-24 18:49:04,260 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:49:04,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:49:04,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:49:04,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:49:04,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:49:04,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:49:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:49:04,263 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 7 states. [2018-10-24 18:49:06,642 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:49:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:49:33,447 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-24 18:49:33,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:49:33,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-10-24 18:49:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:49:33,458 INFO L225 Difference]: With dead ends: 3184 [2018-10-24 18:49:33,458 INFO L226 Difference]: Without dead ends: 1765 [2018-10-24 18:49:33,462 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 214 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 18:49:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-24 18:49:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-24 18:49:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-24 18:49:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-24 18:49:33,512 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 220 [2018-10-24 18:49:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:49:33,513 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-24 18:49:33,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:49:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-24 18:49:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-24 18:49:33,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:49:33,520 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:49:33,521 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:49:33,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:49:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1465497490, now seen corresponding path program 1 times [2018-10-24 18:49:33,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:49:33,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:49:33,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:49:33,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:49:33,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:49:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:49:33,890 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:49:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 33 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 18:49:34,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:49:34,432 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:49:34,432 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 313 with the following transitions: [2018-10-24 18:49:34,433 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [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], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:49:34,439 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:49:34,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:49:35,520 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:49:44,791 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:49:44,791 INFO L272 AbstractInterpreter]: Visited 120 different actions 461 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 18:49:44,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:49:44,798 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:49:48,475 INFO L232 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-24 18:49:48,476 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:50:41,559 INFO L413 sIntCurrentIteration]: We have 311 unified AI predicates [2018-10-24 18:50:41,560 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:50:41,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:50:41,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-24 18:50:41,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:41,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 18:50:41,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 18:50:41,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-10-24 18:50:41,563 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 18:52:38,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 18:52:38,406 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:52:38,411 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:52:38,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:52:38 BoogieIcfgContainer [2018-10-24 18:52:38,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:52:38,412 INFO L168 Benchmark]: Toolchain (without parser) took 242187.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 840.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,414 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:52:38,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1084.44 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 314.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,416 INFO L168 Benchmark]: Boogie Preprocessor took 198.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,417 INFO L168 Benchmark]: RCFGBuilder took 6642.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 265.1 MB). Peak memory consumption was 265.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,418 INFO L168 Benchmark]: TraceAbstraction took 233941.86 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 591.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:52:38,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1084.44 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 314.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 198.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6642.68 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 265.1 MB). Peak memory consumption was 265.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233941.86 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 591.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (1763states) and FLOYD_HOARE automaton (currently 25 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (1096 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.8s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 159.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 732 SDtfs, 4987 SDslu, 450 SDs, 0 SdLazy, 6116 SolverSat, 1912 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 556 GetRequests, 431 SyntacticMatches, 82 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 56.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1763occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953889800382828 AbsIntWeakeningRatio, 0.10943396226415095 AbsIntAvgWeakeningVarsNumRemoved, 562.1924528301887 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 510245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 139/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown