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/Problem18_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:18:38,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:18:38,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:18:38,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:18:38,177 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:18:38,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:18:38,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:18:38,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:18:38,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:18:38,186 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:18:38,187 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:18:38,187 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:18:38,188 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:18:38,189 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:18:38,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:18:38,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:18:38,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:18:38,200 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:18:38,208 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:18:38,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:18:38,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:18:38,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:18:38,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:18:38,225 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:18:38,225 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:18:38,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:18:38,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:18:38,227 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 22:18:38,253 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:18:38,253 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:18:38,255 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:18:38,255 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:18:38,256 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:18:38,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:18:38,256 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:18:38,256 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:18:38,256 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:18:38,257 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:18:38,257 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:18:38,257 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:18:38,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:18:38,259 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:18:38,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:18:38,259 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:18:38,259 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:18:38,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:18:38,261 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:18:38,261 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:18:38,264 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:18:38,264 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:18:38,264 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:18:38,264 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:18:38,265 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:18:38,265 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:18:38,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:18:38,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:18:38,265 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:18:38,266 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:18:38,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:18:38,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:18:38,266 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:18:38,266 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:18:38,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:18:38,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:18:38,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:18:38,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:18:38,357 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:18:38,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-10-24 22:18:38,416 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55f052f7c/8a4568b4f31b469cb66d6535edf51109/FLAG384ad7d53 [2018-10-24 22:18:39,091 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:18:39,092 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-10-24 22:18:39,120 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55f052f7c/8a4568b4f31b469cb66d6535edf51109/FLAG384ad7d53 [2018-10-24 22:18:39,138 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55f052f7c/8a4568b4f31b469cb66d6535edf51109 [2018-10-24 22:18:39,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:18:39,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:18:39,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:18:39,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:18:39,162 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:18:39,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:18:39" (1/1) ... [2018-10-24 22:18:39,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7472627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:39, skipping insertion in model container [2018-10-24 22:18:39,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:18:39" (1/1) ... [2018-10-24 22:18:39,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:18:39,330 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:18:40,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:18:40,405 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:18:40,892 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:18:40,925 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:18:40,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40 WrapperNode [2018-10-24 22:18:40,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:18:40,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:18:40,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:18:40,927 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:18:40,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:18:41,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:18:41,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:18:41,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:18:41,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (1/1) ... [2018-10-24 22:18:41,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:18:41,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:18:41,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:18:41,552 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:18:41,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (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 22:18:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:18:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:18:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:18:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:18:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:18:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:18:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:18:41,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:18:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:18:41,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:18:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:18:41,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:18:49,764 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:18:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:18:49 BoogieIcfgContainer [2018-10-24 22:18:49,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:18:49,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:18:49,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:18:49,771 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:18:49,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:18:39" (1/3) ... [2018-10-24 22:18:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1a5426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:18:49, skipping insertion in model container [2018-10-24 22:18:49,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:18:40" (2/3) ... [2018-10-24 22:18:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1a5426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:18:49, skipping insertion in model container [2018-10-24 22:18:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:18:49" (3/3) ... [2018-10-24 22:18:49,775 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label22_true-unreach-call.c [2018-10-24 22:18:49,785 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:18:49,795 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:18:49,813 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:18:49,858 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:18:49,859 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:18:49,859 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:18:49,859 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:18:49,859 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:18:49,859 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:18:49,860 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:18:49,860 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:18:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:18:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 22:18:49,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:49,908 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:18:49,911 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:49,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1454779668, now seen corresponding path program 1 times [2018-10-24 22:18:49,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:49,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:49,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:49,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:49,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:50,394 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:18:50,469 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 22:18:50,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:18:50,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:18:50,472 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:50,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:18:50,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:18:50,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:18:50,500 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 22:18:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:18:57,722 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 22:18:57,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:18:57,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-24 22:18:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:18:57,770 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 22:18:57,770 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 22:18:57,787 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 22:18:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 22:18:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 22:18:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:18:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-24 22:18:57,981 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 48 [2018-10-24 22:18:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:18:57,982 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-24 22:18:57,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:18:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-24 22:18:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 22:18:57,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:57,995 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:18:57,996 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:57,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash 231159574, now seen corresponding path program 1 times [2018-10-24 22:18:57,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:57,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:57,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:57,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:57,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:58,368 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:18:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:18:58,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:18:58,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:18:58,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:58,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:18:58,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:18:58,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:18:58,611 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-10-24 22:19:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:07,501 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-10-24 22:19:07,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:07,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-24 22:19:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:07,517 INFO L225 Difference]: With dead ends: 3698 [2018-10-24 22:19:07,517 INFO L226 Difference]: Without dead ends: 2230 [2018-10-24 22:19:07,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:19:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-10-24 22:19:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-10-24 22:19:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-10-24 22:19:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-10-24 22:19:07,578 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 120 [2018-10-24 22:19:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:07,579 INFO L481 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-10-24 22:19:07,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:19:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-10-24 22:19:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 22:19:07,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:07,584 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:07,584 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:07,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:07,584 INFO L82 PathProgramCache]: Analyzing trace with hash -555472729, now seen corresponding path program 1 times [2018-10-24 22:19:07,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:07,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:07,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:07,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:07,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:07,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:07,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:19:07,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:07,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:19:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:19:07,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:19:07,875 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-10-24 22:19:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:15,964 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-10-24 22:19:15,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:15,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 22:19:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:15,995 INFO L225 Difference]: With dead ends: 5866 [2018-10-24 22:19:15,995 INFO L226 Difference]: Without dead ends: 3663 [2018-10-24 22:19:16,005 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 22:19:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-10-24 22:19:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-10-24 22:19:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-10-24 22:19:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-10-24 22:19:16,121 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 143 [2018-10-24 22:19:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:16,122 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-10-24 22:19:16,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:19:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-10-24 22:19:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 22:19:16,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:16,125 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:16,125 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:16,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1738669407, now seen corresponding path program 1 times [2018-10-24 22:19:16,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:16,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:16,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:16,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:16,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:16,382 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:19:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:16,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:16,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:19:16,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:16,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:19:16,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:19:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:19:16,491 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-10-24 22:19:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:23,460 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-10-24 22:19:23,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:23,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-24 22:19:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:23,497 INFO L225 Difference]: With dead ends: 8735 [2018-10-24 22:19:23,497 INFO L226 Difference]: Without dead ends: 5102 [2018-10-24 22:19:23,509 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 22:19:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-24 22:19:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-10-24 22:19:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-10-24 22:19:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-10-24 22:19:23,622 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 147 [2018-10-24 22:19:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:23,622 INFO L481 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-10-24 22:19:23,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:19:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-10-24 22:19:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 22:19:23,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:23,626 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:23,626 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:23,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:23,627 INFO L82 PathProgramCache]: Analyzing trace with hash -907400126, now seen corresponding path program 1 times [2018-10-24 22:19:23,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:23,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:23,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:23,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:23,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:23,944 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:19:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:24,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:24,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:19:24,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:24,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:19:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:19:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:19:24,016 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-10-24 22:19:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:29,730 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-10-24 22:19:29,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:29,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-24 22:19:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:29,763 INFO L225 Difference]: With dead ends: 13307 [2018-10-24 22:19:29,763 INFO L226 Difference]: Without dead ends: 8229 [2018-10-24 22:19:29,775 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 22:19:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-10-24 22:19:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-10-24 22:19:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-10-24 22:19:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-10-24 22:19:29,988 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 178 [2018-10-24 22:19:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:29,989 INFO L481 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-10-24 22:19:29,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:19:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-10-24 22:19:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 22:19:29,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:29,997 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:19:29,997 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:29,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:29,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1716237031, now seen corresponding path program 1 times [2018-10-24 22:19:29,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:29,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:29,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:29,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:29,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:19:30,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:19:30,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:19:30,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-24 22:19:30,483 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:19:30,558 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:19:30,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:19:32,555 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:19:32,557 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:19:32,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:32,585 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:19:34,293 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 78.04% of their original sizes. [2018-10-24 22:19:34,293 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:19:34,670 INFO L413 sIntCurrentIteration]: We have 210 unified AI predicates [2018-10-24 22:19:34,670 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:19:34,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:19:34,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:19:34,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:34,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:19:34,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:19:34,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:19:34,673 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-10-24 22:19:37,942 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:20:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:21,870 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-10-24 22:20:21,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:21,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-10-24 22:20:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:21,898 INFO L225 Difference]: With dead ends: 16955 [2018-10-24 22:20:21,898 INFO L226 Difference]: Without dead ends: 8833 [2018-10-24 22:20:21,913 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:20:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-10-24 22:20:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-10-24 22:20:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-10-24 22:20:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-10-24 22:20:22,084 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 211 [2018-10-24 22:20:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:22,085 INFO L481 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-10-24 22:20:22,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:20:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-10-24 22:20:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-24 22:20:22,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:22,096 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:22,097 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:22,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:22,097 INFO L82 PathProgramCache]: Analyzing trace with hash -19059722, now seen corresponding path program 1 times [2018-10-24 22:20:22,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:22,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:22,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:22,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:22,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:22,628 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:22,832 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:23,067 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 182 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:20:23,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:20:23,429 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:20:23,429 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-10-24 22:20:23,429 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:20:23,443 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:20:23,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:20:38,249 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:20:38,249 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 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 22:20:38,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:38,269 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:20:41,868 INFO L232 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 78.93% of their original sizes. [2018-10-24 22:20:41,869 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:21:19,827 INFO L413 sIntCurrentIteration]: We have 397 unified AI predicates [2018-10-24 22:21:19,828 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:21:19,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:21:19,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2018-10-24 22:21:19,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:21:19,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 22:21:19,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 22:21:19,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:21:19,830 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 22:22:34,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 22:22:34,036 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:22:34,041 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:22:34,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:22:34 BoogieIcfgContainer [2018-10-24 22:22:34,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:22:34,043 INFO L168 Benchmark]: Toolchain (without parser) took 234890.18 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,044 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:22:34,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1770.38 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 415.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -967.2 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,047 INFO L168 Benchmark]: Boogie Preprocessor took 208.65 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,047 INFO L168 Benchmark]: RCFGBuilder took 8214.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.5 MB). Peak memory consumption was 498.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,048 INFO L168 Benchmark]: TraceAbstraction took 224275.00 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 862.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:22:34,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1770.38 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 415.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -967.2 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 208.65 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8214.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.5 MB). Peak memory consumption was 498.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224275.00 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 862.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (8831states) and FLOYD_HOARE automaton (currently 15 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (361 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 224.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 158.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1431 SDtfs, 14926 SDslu, 702 SDs, 0 SdLazy, 23067 SolverSat, 5626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 656 GetRequests, 521 SyntacticMatches, 85 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 39.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8831occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995973903493064 AbsIntWeakeningRatio, 0.09555189456342669 AbsIntAvgWeakeningVarsNumRemoved, 482.2207578253707 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 166 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1245 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1238 ConstructedInterpolants, 0 QuantifiedInterpolants, 1836423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 438/676 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown