./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7_true-unreach-call_true-valid-memsafety_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7_true-unreach-call_true-valid-memsafety_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccd6d122756047ddb1225c106ac06a6748e14c22 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:26:15,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:26:15,186 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:26:15,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:26:15,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:26:15,196 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:26:15,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:26:15,198 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:26:15,199 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:26:15,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:26:15,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:26:15,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:26:15,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:26:15,201 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:26:15,202 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:26:15,203 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:26:15,203 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:26:15,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:26:15,205 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:26:15,206 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:26:15,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:26:15,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:26:15,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:26:15,210 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:26:15,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:26:15,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:26:15,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:26:15,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:26:15,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:26:15,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:26:15,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:26:15,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:26:15,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:26:15,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:26:15,214 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:26:15,215 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:26:15,215 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 02:26:15,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:26:15,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:26:15,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:26:15,226 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:26:15,226 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:26:15,226 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:26:15,226 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:26:15,227 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:26:15,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:26:15,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:26:15,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:26:15,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:26:15,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:26:15,230 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccd6d122756047ddb1225c106ac06a6748e14c22 [2018-11-23 02:26:15,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:26:15,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:26:15,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:26:15,265 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:26:15,265 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:26:15,266 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/../../sv-benchmarks/c/locks/test_locks_7_true-unreach-call_true-valid-memsafety_false-termination.c [2018-11-23 02:26:15,309 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/data/89e9387a4/df119aef48584512939a465a9bed53c8/FLAG4930e7876 [2018-11-23 02:26:15,642 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:26:15,642 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/sv-benchmarks/c/locks/test_locks_7_true-unreach-call_true-valid-memsafety_false-termination.c [2018-11-23 02:26:15,648 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/data/89e9387a4/df119aef48584512939a465a9bed53c8/FLAG4930e7876 [2018-11-23 02:26:16,076 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/data/89e9387a4/df119aef48584512939a465a9bed53c8 [2018-11-23 02:26:16,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:26:16,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:26:16,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:26:16,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:26:16,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:26:16,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f375ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16, skipping insertion in model container [2018-11-23 02:26:16,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:26:16,104 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:26:16,217 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:26:16,220 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:26:16,232 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:26:16,241 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:26:16,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16 WrapperNode [2018-11-23 02:26:16,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:26:16,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:26:16,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:26:16,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:26:16,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:26:16,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:26:16,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:26:16,255 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:26:16,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... [2018-11-23 02:26:16,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:26:16,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:26:16,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:26:16,270 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:26:16,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/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 [2018-11-23 02:26:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:26:16,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:26:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:26:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:26:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:26:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:26:16,499 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:26:16,499 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:26:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:16 BoogieIcfgContainer [2018-11-23 02:26:16,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:26:16,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:26:16,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:26:16,504 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:26:16,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:16" (1/3) ... [2018-11-23 02:26:16,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d667db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:16, skipping insertion in model container [2018-11-23 02:26:16,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:16" (2/3) ... [2018-11-23 02:26:16,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d667db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:16, skipping insertion in model container [2018-11-23 02:26:16,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:16" (3/3) ... [2018-11-23 02:26:16,507 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7_true-unreach-call_true-valid-memsafety_false-termination.c [2018-11-23 02:26:16,514 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:26:16,520 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:26:16,530 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:26:16,552 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:26:16,553 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:26:16,553 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:26:16,553 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:26:16,553 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:26:16,553 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:26:16,553 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:26:16,553 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:26:16,553 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:26:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-23 02:26:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 02:26:16,570 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,571 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,572 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2018-11-23 02:26:16,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:16,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:16,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:16,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:16,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:16,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:16,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,695 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-11-23 02:26:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:16,725 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2018-11-23 02:26:16,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:16,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-23 02:26:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:16,733 INFO L225 Difference]: With dead ends: 69 [2018-11-23 02:26:16,733 INFO L226 Difference]: Without dead ends: 54 [2018-11-23 02:26:16,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-23 02:26:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-11-23 02:26:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 02:26:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2018-11-23 02:26:16,758 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2018-11-23 02:26:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:16,758 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2018-11-23 02:26:16,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2018-11-23 02:26:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 02:26:16,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,759 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,759 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2018-11-23 02:26:16,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:16,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:16,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:16,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:16,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:16,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,795 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2018-11-23 02:26:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:16,810 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2018-11-23 02:26:16,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:16,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-23 02:26:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:16,812 INFO L225 Difference]: With dead ends: 87 [2018-11-23 02:26:16,812 INFO L226 Difference]: Without dead ends: 54 [2018-11-23 02:26:16,812 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-23 02:26:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-11-23 02:26:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 02:26:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2018-11-23 02:26:16,816 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2018-11-23 02:26:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:16,816 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2018-11-23 02:26:16,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2018-11-23 02:26:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:26:16,817 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,817 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,817 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2018-11-23 02:26:16,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:16,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:16,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:16,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:16,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:16,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,842 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2018-11-23 02:26:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:16,868 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2018-11-23 02:26:16,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:16,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 02:26:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:16,870 INFO L225 Difference]: With dead ends: 81 [2018-11-23 02:26:16,870 INFO L226 Difference]: Without dead ends: 57 [2018-11-23 02:26:16,870 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-23 02:26:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-11-23 02:26:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-23 02:26:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2018-11-23 02:26:16,874 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 18 [2018-11-23 02:26:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:16,875 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 91 transitions. [2018-11-23 02:26:16,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2018-11-23 02:26:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:26:16,875 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,876 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,876 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1279590326, now seen corresponding path program 1 times [2018-11-23 02:26:16,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:16,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:16,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:16,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,921 INFO L87 Difference]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2018-11-23 02:26:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:16,933 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2018-11-23 02:26:16,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:16,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 02:26:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:16,934 INFO L225 Difference]: With dead ends: 100 [2018-11-23 02:26:16,935 INFO L226 Difference]: Without dead ends: 98 [2018-11-23 02:26:16,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-23 02:26:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2018-11-23 02:26:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-23 02:26:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2018-11-23 02:26:16,942 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2018-11-23 02:26:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:16,942 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2018-11-23 02:26:16,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2018-11-23 02:26:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:26:16,943 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,943 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,943 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,943 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2018-11-23 02:26:16,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:16,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:16,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:16,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:16,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:16,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,966 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2018-11-23 02:26:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:16,988 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2018-11-23 02:26:16,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:16,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 02:26:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:16,989 INFO L225 Difference]: With dead ends: 164 [2018-11-23 02:26:16,989 INFO L226 Difference]: Without dead ends: 100 [2018-11-23 02:26:16,990 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-11-23 02:26:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2018-11-23 02:26:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-23 02:26:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2018-11-23 02:26:16,997 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2018-11-23 02:26:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:16,997 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2018-11-23 02:26:16,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2018-11-23 02:26:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:26:16,998 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:16,998 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:16,998 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:16,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2018-11-23 02:26:16,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:16,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:16,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,030 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2018-11-23 02:26:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,041 INFO L93 Difference]: Finished difference Result 147 states and 241 transitions. [2018-11-23 02:26:17,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 02:26:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,042 INFO L225 Difference]: With dead ends: 147 [2018-11-23 02:26:17,042 INFO L226 Difference]: Without dead ends: 102 [2018-11-23 02:26:17,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-11-23 02:26:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2018-11-23 02:26:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-23 02:26:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2018-11-23 02:26:17,049 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 19 [2018-11-23 02:26:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,049 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2018-11-23 02:26:17,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2018-11-23 02:26:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:26:17,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,050 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,050 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1713873713, now seen corresponding path program 1 times [2018-11-23 02:26:17,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,082 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand 3 states. [2018-11-23 02:26:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,096 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2018-11-23 02:26:17,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 02:26:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,101 INFO L225 Difference]: With dead ends: 180 [2018-11-23 02:26:17,101 INFO L226 Difference]: Without dead ends: 178 [2018-11-23 02:26:17,102 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-11-23 02:26:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2018-11-23 02:26:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-11-23 02:26:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2018-11-23 02:26:17,109 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2018-11-23 02:26:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,110 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2018-11-23 02:26:17,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2018-11-23 02:26:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:26:17,110 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,110 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,111 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2018-11-23 02:26:17,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,126 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2018-11-23 02:26:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,141 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2018-11-23 02:26:17,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 02:26:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,142 INFO L225 Difference]: With dead ends: 312 [2018-11-23 02:26:17,142 INFO L226 Difference]: Without dead ends: 186 [2018-11-23 02:26:17,143 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-11-23 02:26:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2018-11-23 02:26:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-11-23 02:26:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2018-11-23 02:26:17,151 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2018-11-23 02:26:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,152 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2018-11-23 02:26:17,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2018-11-23 02:26:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:26:17,153 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,153 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,153 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2018-11-23 02:26:17,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,169 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2018-11-23 02:26:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,184 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2018-11-23 02:26:17,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 02:26:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,186 INFO L225 Difference]: With dead ends: 276 [2018-11-23 02:26:17,186 INFO L226 Difference]: Without dead ends: 190 [2018-11-23 02:26:17,186 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-23 02:26:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2018-11-23 02:26:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-23 02:26:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2018-11-23 02:26:17,196 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2018-11-23 02:26:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,197 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2018-11-23 02:26:17,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2018-11-23 02:26:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:26:17,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,198 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,198 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2018-11-23 02:26:17,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,223 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2018-11-23 02:26:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,243 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2018-11-23 02:26:17,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 02:26:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,245 INFO L225 Difference]: With dead ends: 332 [2018-11-23 02:26:17,245 INFO L226 Difference]: Without dead ends: 330 [2018-11-23 02:26:17,246 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-11-23 02:26:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2018-11-23 02:26:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-11-23 02:26:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2018-11-23 02:26:17,254 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2018-11-23 02:26:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,255 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2018-11-23 02:26:17,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2018-11-23 02:26:17,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:26:17,256 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,256 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,258 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2018-11-23 02:26:17,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,271 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2018-11-23 02:26:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,287 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2018-11-23 02:26:17,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 02:26:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,289 INFO L225 Difference]: With dead ends: 604 [2018-11-23 02:26:17,289 INFO L226 Difference]: Without dead ends: 354 [2018-11-23 02:26:17,289 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-11-23 02:26:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2018-11-23 02:26:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-11-23 02:26:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2018-11-23 02:26:17,300 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2018-11-23 02:26:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,300 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2018-11-23 02:26:17,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2018-11-23 02:26:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:26:17,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,302 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2018-11-23 02:26:17,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,326 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2018-11-23 02:26:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,340 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2018-11-23 02:26:17,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-23 02:26:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,342 INFO L225 Difference]: With dead ends: 528 [2018-11-23 02:26:17,342 INFO L226 Difference]: Without dead ends: 362 [2018-11-23 02:26:17,342 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-11-23 02:26:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2018-11-23 02:26:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-11-23 02:26:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 518 transitions. [2018-11-23 02:26:17,350 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 518 transitions. Word has length 21 [2018-11-23 02:26:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,350 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 518 transitions. [2018-11-23 02:26:17,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 518 transitions. [2018-11-23 02:26:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:26:17,351 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,351 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,351 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1268692026, now seen corresponding path program 1 times [2018-11-23 02:26:17,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,368 INFO L87 Difference]: Start difference. First operand 360 states and 518 transitions. Second operand 3 states. [2018-11-23 02:26:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,398 INFO L93 Difference]: Finished difference Result 620 states and 904 transitions. [2018-11-23 02:26:17,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-23 02:26:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,400 INFO L225 Difference]: With dead ends: 620 [2018-11-23 02:26:17,400 INFO L226 Difference]: Without dead ends: 618 [2018-11-23 02:26:17,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2018-11-23 02:26:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 520. [2018-11-23 02:26:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-23 02:26:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 726 transitions. [2018-11-23 02:26:17,412 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 726 transitions. Word has length 21 [2018-11-23 02:26:17,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,412 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 726 transitions. [2018-11-23 02:26:17,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,412 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 726 transitions. [2018-11-23 02:26:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:26:17,413 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,413 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:26:17,413 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1661719036, now seen corresponding path program 1 times [2018-11-23 02:26:17,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,434 INFO L87 Difference]: Start difference. First operand 520 states and 726 transitions. Second operand 3 states. [2018-11-23 02:26:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,458 INFO L93 Difference]: Finished difference Result 1180 states and 1640 transitions. [2018-11-23 02:26:17,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-23 02:26:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,460 INFO L225 Difference]: With dead ends: 1180 [2018-11-23 02:26:17,460 INFO L226 Difference]: Without dead ends: 682 [2018-11-23 02:26:17,461 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2018-11-23 02:26:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2018-11-23 02:26:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2018-11-23 02:26:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 918 transitions. [2018-11-23 02:26:17,478 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 918 transitions. Word has length 21 [2018-11-23 02:26:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,478 INFO L480 AbstractCegarLoop]: Abstraction has 680 states and 918 transitions. [2018-11-23 02:26:17,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 918 transitions. [2018-11-23 02:26:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:26:17,479 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,479 INFO L402 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] [2018-11-23 02:26:17,479 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash -674531426, now seen corresponding path program 1 times [2018-11-23 02:26:17,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,493 INFO L87 Difference]: Start difference. First operand 680 states and 918 transitions. Second operand 3 states. [2018-11-23 02:26:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,517 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2018-11-23 02:26:17,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-23 02:26:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,519 INFO L225 Difference]: With dead ends: 1020 [2018-11-23 02:26:17,519 INFO L226 Difference]: Without dead ends: 698 [2018-11-23 02:26:17,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2018-11-23 02:26:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2018-11-23 02:26:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2018-11-23 02:26:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2018-11-23 02:26:17,536 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2018-11-23 02:26:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,537 INFO L480 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2018-11-23 02:26:17,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2018-11-23 02:26:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:26:17,538 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,538 INFO L402 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] [2018-11-23 02:26:17,538 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2018-11-23 02:26:17,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,558 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2018-11-23 02:26:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,580 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2018-11-23 02:26:17,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-23 02:26:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,583 INFO L225 Difference]: With dead ends: 1164 [2018-11-23 02:26:17,583 INFO L226 Difference]: Without dead ends: 1162 [2018-11-23 02:26:17,583 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-11-23 02:26:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2018-11-23 02:26:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-23 02:26:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2018-11-23 02:26:17,605 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2018-11-23 02:26:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,605 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2018-11-23 02:26:17,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2018-11-23 02:26:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:26:17,606 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,606 INFO L402 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] [2018-11-23 02:26:17,607 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,607 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2018-11-23 02:26:17,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,626 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2018-11-23 02:26:17,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,659 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2018-11-23 02:26:17,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-23 02:26:17,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,662 INFO L225 Difference]: With dead ends: 2316 [2018-11-23 02:26:17,662 INFO L226 Difference]: Without dead ends: 1322 [2018-11-23 02:26:17,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2018-11-23 02:26:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2018-11-23 02:26:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2018-11-23 02:26:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2018-11-23 02:26:17,693 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2018-11-23 02:26:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,693 INFO L480 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2018-11-23 02:26:17,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2018-11-23 02:26:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 02:26:17,695 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,695 INFO L402 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] [2018-11-23 02:26:17,695 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,695 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2018-11-23 02:26:17,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,709 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2018-11-23 02:26:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,741 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2018-11-23 02:26:17,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-23 02:26:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,744 INFO L225 Difference]: With dead ends: 1980 [2018-11-23 02:26:17,744 INFO L226 Difference]: Without dead ends: 1354 [2018-11-23 02:26:17,744 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-11-23 02:26:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2018-11-23 02:26:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-23 02:26:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2018-11-23 02:26:17,769 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2018-11-23 02:26:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,770 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2018-11-23 02:26:17,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2018-11-23 02:26:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 02:26:17,772 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,772 INFO L402 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] [2018-11-23 02:26:17,772 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2018-11-23 02:26:17,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,794 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2018-11-23 02:26:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,838 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2018-11-23 02:26:17,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-23 02:26:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,842 INFO L225 Difference]: With dead ends: 2186 [2018-11-23 02:26:17,842 INFO L226 Difference]: Without dead ends: 2184 [2018-11-23 02:26:17,843 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2018-11-23 02:26:17,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2018-11-23 02:26:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2018-11-23 02:26:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2018-11-23 02:26:17,898 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2018-11-23 02:26:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,899 INFO L480 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2018-11-23 02:26:17,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2018-11-23 02:26:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 02:26:17,901 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:26:17,901 INFO L402 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] [2018-11-23 02:26:17,901 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:26:17,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:26:17,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2018-11-23 02:26:17,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:26:17,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:26:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:26:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:26:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:26:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:26:17,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:26:17,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:26:17,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:26:17,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:26:17,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,925 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2018-11-23 02:26:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:26:17,973 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2018-11-23 02:26:17,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:26:17,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-23 02:26:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:26:17,973 INFO L225 Difference]: With dead ends: 4552 [2018-11-23 02:26:17,973 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:26:17,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:26:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:26:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:26:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:26:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:26:17,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-23 02:26:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:26:17,977 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:26:17,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:26:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:26:17,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:26:17,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:26:18,006 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:26:18,007 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point L102(line 102) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L451 ceAbstractionStarter]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point L87(line 87) no Hoare annotation was computed. [2018-11-23 02:26:18,007 INFO L448 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L444 ceAbstractionStarter]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L97(line 97) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L107(line 107) no Hoare annotation was computed. [2018-11-23 02:26:18,008 INFO L448 ceAbstractionStarter]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L92(line 92) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L451 ceAbstractionStarter]: At program point L117(lines 5 121) the Hoare annotation is: true [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L51(lines 51 53) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,009 INFO L448 ceAbstractionStarter]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2018-11-23 02:26:18,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:26:18 BoogieIcfgContainer [2018-11-23 02:26:18,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:26:18,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:26:18,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:26:18,016 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:26:18,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:16" (3/4) ... [2018-11-23 02:26:18,019 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:26:18,023 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:26:18,024 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:26:18,027 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 02:26:18,028 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 02:26:18,028 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:26:18,064 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_56122260-d784-4c78-946a-45e3bbb2d651/bin-2019/uautomizer/witness.graphml [2018-11-23 02:26:18,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:26:18,064 INFO L168 Benchmark]: Toolchain (without parser) took 1985.48 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 260.0 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,065 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:26:18,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,066 INFO L168 Benchmark]: Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:26:18,066 INFO L168 Benchmark]: RCFGBuilder took 230.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -219.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,066 INFO L168 Benchmark]: TraceAbstraction took 1514.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.2 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -35.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,067 INFO L168 Benchmark]: Witness Printer took 48.50 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-11-23 02:26:18,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -219.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1514.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 68.2 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -35.0 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.50 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 20 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1238 SDtfs, 574 SDslu, 829 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2056occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 530 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 138 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 13856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...