./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/psyco/psyco_security_true-unreach-call_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_security_true-unreach-call_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cc1f38a976dda42d71f86348e088e61d77f90eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:26:01,403 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:26:01,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:26:01,416 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:26:01,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:26:01,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:26:01,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:26:01,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:26:01,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:26:01,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:26:01,430 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:26:01,430 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:26:01,432 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:26:01,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:26:01,441 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:26:01,442 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:26:01,442 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:26:01,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:26:01,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:26:01,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:26:01,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:26:01,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:26:01,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:26:01,457 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:26:01,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:26:01,459 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:26:01,459 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:26:01,460 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:26:01,460 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:26:01,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:26:01,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:26:01,464 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:26:01,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:26:01,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:26:01,465 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:26:01,466 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:26:01,466 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:26:01,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:26:01,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:26:01,479 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:26:01,479 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:26:01,479 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:26:01,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:26:01,480 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:26:01,480 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:26:01,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:26:01,480 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:26:01,480 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:26:01,481 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:26:01,481 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:26:01,481 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:26:01,481 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:26:01,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:26:01,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:26:01,483 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:26:01,483 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:26:01,483 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:26:01,483 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:26:01,484 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:26:01,484 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:26:01,484 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:26:01,484 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:26:01,484 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:26:01,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:26:01,484 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:26:01,485 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan 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 -> Taipan 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 -> 8cc1f38a976dda42d71f86348e088e61d77f90eb [2018-10-26 23:26:01,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:26:01,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:26:01,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:26:01,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:26:01,552 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:26:01,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/../../sv-benchmarks/c/psyco/psyco_security_true-unreach-call_false-termination.c [2018-10-26 23:26:01,609 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/data/1a1ae7684/ceb718e2172f4125a65f78a2e94819db/FLAG331cd042e [2018-10-26 23:26:02,011 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:26:02,012 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/sv-benchmarks/c/psyco/psyco_security_true-unreach-call_false-termination.c [2018-10-26 23:26:02,021 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/data/1a1ae7684/ceb718e2172f4125a65f78a2e94819db/FLAG331cd042e [2018-10-26 23:26:02,036 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/data/1a1ae7684/ceb718e2172f4125a65f78a2e94819db [2018-10-26 23:26:02,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:26:02,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:26:02,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:26:02,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:26:02,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:26:02,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@972f7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02, skipping insertion in model container [2018-10-26 23:26:02,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:26:02,091 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:26:02,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:26:02,283 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:26:02,323 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:26:02,349 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:26:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02 WrapperNode [2018-10-26 23:26:02,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:26:02,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:26:02,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:26:02,354 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:26:02,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:26:02,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:26:02,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:26:02,378 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:26:02,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... [2018-10-26 23:26:02,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:26:02,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:26:02,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:26:02,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:26:02,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:26:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:26:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:26:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:26:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:26:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:26:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:26:03,210 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:26:03,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:03 BoogieIcfgContainer [2018-10-26 23:26:03,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:26:03,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:26:03,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:26:03,215 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:26:03,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:26:02" (1/3) ... [2018-10-26 23:26:03,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ee9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:03, skipping insertion in model container [2018-10-26 23:26:03,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:26:02" (2/3) ... [2018-10-26 23:26:03,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ee9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:26:03, skipping insertion in model container [2018-10-26 23:26:03,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:03" (3/3) ... [2018-10-26 23:26:03,220 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_security_true-unreach-call_false-termination.c [2018-10-26 23:26:03,228 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:26:03,243 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:26:03,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:26:03,303 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:26:03,304 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:26:03,304 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:26:03,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:26:03,304 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:26:03,304 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:26:03,304 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:26:03,304 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:26:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-10-26 23:26:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:26:03,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:03,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:03,332 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:03,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1921368221, now seen corresponding path program 1 times [2018-10-26 23:26:03,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:26:03,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:03,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:26:03,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:03,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:26:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:26:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:26:03,464 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-10-26 23:26:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:03,494 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2018-10-26 23:26:03,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:26:03,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-26 23:26:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:03,506 INFO L225 Difference]: With dead ends: 160 [2018-10-26 23:26:03,506 INFO L226 Difference]: Without dead ends: 78 [2018-10-26 23:26:03,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:26:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-26 23:26:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-26 23:26:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-26 23:26:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2018-10-26 23:26:03,556 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2018-10-26 23:26:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:03,557 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2018-10-26 23:26:03,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:26:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2018-10-26 23:26:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 23:26:03,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:03,558 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:03,558 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:03,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:03,558 INFO L82 PathProgramCache]: Analyzing trace with hash -34635363, now seen corresponding path program 1 times [2018-10-26 23:26:03,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:03,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:03,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:26:03,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:03,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:03,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:03,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:03,626 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 3 states. [2018-10-26 23:26:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:03,886 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2018-10-26 23:26:03,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:03,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-26 23:26:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:03,887 INFO L225 Difference]: With dead ends: 153 [2018-10-26 23:26:03,887 INFO L226 Difference]: Without dead ends: 81 [2018-10-26 23:26:03,888 INFO L605 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 [2018-10-26 23:26:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-26 23:26:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-26 23:26:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-26 23:26:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2018-10-26 23:26:03,896 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2018-10-26 23:26:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:03,897 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2018-10-26 23:26:03,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2018-10-26 23:26:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 23:26:03,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:03,898 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:03,898 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:03,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:03,898 INFO L82 PathProgramCache]: Analyzing trace with hash -304388480, now seen corresponding path program 1 times [2018-10-26 23:26:03,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:03,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:03,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:03,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:26:03,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:03,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:03,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:03,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:03,945 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 3 states. [2018-10-26 23:26:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,051 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2018-10-26 23:26:04,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-26 23:26:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,054 INFO L225 Difference]: With dead ends: 146 [2018-10-26 23:26:04,055 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 23:26:04,055 INFO L605 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 [2018-10-26 23:26:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 23:26:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-26 23:26:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-26 23:26:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2018-10-26 23:26:04,061 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2018-10-26 23:26:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,061 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2018-10-26 23:26:04,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2018-10-26 23:26:04,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 23:26:04,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,062 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,062 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,063 INFO L82 PathProgramCache]: Analyzing trace with hash -512664072, now seen corresponding path program 1 times [2018-10-26 23:26:04,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:26:04,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,140 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 3 states. [2018-10-26 23:26:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,335 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2018-10-26 23:26:04,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-26 23:26:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,337 INFO L225 Difference]: With dead ends: 192 [2018-10-26 23:26:04,337 INFO L226 Difference]: Without dead ends: 122 [2018-10-26 23:26:04,338 INFO L605 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 [2018-10-26 23:26:04,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-26 23:26:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2018-10-26 23:26:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-26 23:26:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2018-10-26 23:26:04,345 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2018-10-26 23:26:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,346 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2018-10-26 23:26:04,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2018-10-26 23:26:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:26:04,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,347 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,347 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1940953662, now seen corresponding path program 1 times [2018-10-26 23:26:04,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:26:04,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,384 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 3 states. [2018-10-26 23:26:04,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,425 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2018-10-26 23:26:04,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-10-26 23:26:04,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,427 INFO L225 Difference]: With dead ends: 183 [2018-10-26 23:26:04,427 INFO L226 Difference]: Without dead ends: 87 [2018-10-26 23:26:04,427 INFO L605 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 [2018-10-26 23:26:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-26 23:26:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2018-10-26 23:26:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-26 23:26:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2018-10-26 23:26:04,433 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2018-10-26 23:26:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,434 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2018-10-26 23:26:04,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2018-10-26 23:26:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 23:26:04,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,435 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,435 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1172052595, now seen corresponding path program 1 times [2018-10-26 23:26:04,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:04,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,469 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 3 states. [2018-10-26 23:26:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,508 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2018-10-26 23:26:04,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-26 23:26:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,509 INFO L225 Difference]: With dead ends: 134 [2018-10-26 23:26:04,510 INFO L226 Difference]: Without dead ends: 70 [2018-10-26 23:26:04,510 INFO L605 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 [2018-10-26 23:26:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-26 23:26:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-26 23:26:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-26 23:26:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2018-10-26 23:26:04,516 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2018-10-26 23:26:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,516 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2018-10-26 23:26:04,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2018-10-26 23:26:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 23:26:04,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,517 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,517 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1320221367, now seen corresponding path program 1 times [2018-10-26 23:26:04,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:04,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,568 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 3 states. [2018-10-26 23:26:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,785 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2018-10-26 23:26:04,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-26 23:26:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,786 INFO L225 Difference]: With dead ends: 158 [2018-10-26 23:26:04,786 INFO L226 Difference]: Without dead ends: 111 [2018-10-26 23:26:04,787 INFO L605 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 [2018-10-26 23:26:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-26 23:26:04,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2018-10-26 23:26:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-26 23:26:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2018-10-26 23:26:04,793 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2018-10-26 23:26:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,794 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2018-10-26 23:26:04,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2018-10-26 23:26:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 23:26:04,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,795 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,795 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1121323394, now seen corresponding path program 1 times [2018-10-26 23:26:04,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:04,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,824 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 3 states. [2018-10-26 23:26:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:04,898 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2018-10-26 23:26:04,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:04,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-26 23:26:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:04,902 INFO L225 Difference]: With dead ends: 166 [2018-10-26 23:26:04,903 INFO L226 Difference]: Without dead ends: 92 [2018-10-26 23:26:04,903 INFO L605 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 [2018-10-26 23:26:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-26 23:26:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-26 23:26:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-26 23:26:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2018-10-26 23:26:04,910 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2018-10-26 23:26:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:04,910 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2018-10-26 23:26:04,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2018-10-26 23:26:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 23:26:04,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:04,912 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:04,912 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:04,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:04,912 INFO L82 PathProgramCache]: Analyzing trace with hash -984969239, now seen corresponding path program 1 times [2018-10-26 23:26:04,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:04,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:04,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:04,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:04,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:04,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:04,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:04,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:04,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:04,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:04,964 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 3 states. [2018-10-26 23:26:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:05,046 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2018-10-26 23:26:05,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:05,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-26 23:26:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:05,047 INFO L225 Difference]: With dead ends: 139 [2018-10-26 23:26:05,047 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 23:26:05,048 INFO L605 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 [2018-10-26 23:26:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 23:26:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-26 23:26:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-26 23:26:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2018-10-26 23:26:05,053 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2018-10-26 23:26:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:05,053 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2018-10-26 23:26:05,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2018-10-26 23:26:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 23:26:05,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:05,054 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:05,054 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:05,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:05,055 INFO L82 PathProgramCache]: Analyzing trace with hash 885900628, now seen corresponding path program 1 times [2018-10-26 23:26:05,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:05,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:05,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:05,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:05,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:05,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:05,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:05,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:05,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:05,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:05,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:05,149 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 3 states. [2018-10-26 23:26:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:05,288 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2018-10-26 23:26:05,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:05,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-26 23:26:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:05,290 INFO L225 Difference]: With dead ends: 74 [2018-10-26 23:26:05,290 INFO L226 Difference]: Without dead ends: 70 [2018-10-26 23:26:05,290 INFO L605 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 [2018-10-26 23:26:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-26 23:26:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-26 23:26:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-26 23:26:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-10-26 23:26:05,293 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2018-10-26 23:26:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:05,293 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-10-26 23:26:05,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-10-26 23:26:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 23:26:05,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:26:05,294 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:26:05,295 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:26:05,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:26:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1704565915, now seen corresponding path program 1 times [2018-10-26 23:26:05,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:26:05,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:05,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:26:05,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:26:05,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:26:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:26:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:26:05,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:26:05,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:26:05,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:26:05,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:26:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:26:05,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:26:05,325 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2018-10-26 23:26:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:26:05,401 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2018-10-26 23:26:05,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:26:05,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-26 23:26:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:26:05,403 INFO L225 Difference]: With dead ends: 111 [2018-10-26 23:26:05,403 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:26:05,403 INFO L605 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 [2018-10-26 23:26:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:26:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:26:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:26:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:26:05,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-10-26 23:26:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:26:05,404 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:26:05,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:26:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:26:05,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:26:05,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:26:05,691 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:26:05,710 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:26:05,710 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 23:26:05,710 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point L316(lines 316 331) no Hoare annotation was computed. [2018-10-26 23:26:05,710 INFO L425 ceAbstractionStarter]: For program point L283(lines 283 382) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L250(lines 250 261) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L184(lines 184 199) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L118(lines 118 129) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L366(lines 366 377) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L300(lines 300 315) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L234(lines 234 245) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L102(lines 102 113) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L350(lines 350 361) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L284(lines 284 299) no Hoare annotation was computed. [2018-10-26 23:26:05,711 INFO L425 ceAbstractionStarter]: For program point L218(lines 218 229) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L86(lines 86 88) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L334(lines 334 345) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L202(lines 202 213) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L70(lines 70 72) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L318(lines 318 329) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L186(lines 186 197) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L54(lines 54 56) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L302(lines 302 313) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L170(lines 170 172) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L286(lines 286 297) no Hoare annotation was computed. [2018-10-26 23:26:05,712 INFO L425 ceAbstractionStarter]: For program point L154(lines 154 156) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 385) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 0)) (and (= main_~this_state~0 3) (<= 4 main_~q~0))) [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 385) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L270(lines 270 272) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L138(lines 138 140) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L254(lines 254 256) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L122(lines 122 124) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L370(lines 370 372) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L238(lines 238 240) no Hoare annotation was computed. [2018-10-26 23:26:05,713 INFO L425 ceAbstractionStarter]: For program point L106(lines 106 108) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L354(lines 354 356) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L222(lines 222 224) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L421 ceAbstractionStarter]: At program point L371(lines 13 390) the Hoare annotation is: false [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L338(lines 338 340) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L206(lines 206 208) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L322(lines 322 324) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L190(lines 190 192) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L306(lines 306 308) no Hoare annotation was computed. [2018-10-26 23:26:05,714 INFO L425 ceAbstractionStarter]: For program point L290(lines 290 292) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 43) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L80(lines 80 95) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 98) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L64(lines 64 79) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L48(lines 48 63) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L164(lines 164 179) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L148(lines 148 163) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L82(lines 82 93) no Hoare annotation was computed. [2018-10-26 23:26:05,715 INFO L425 ceAbstractionStarter]: For program point L264(lines 264 279) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L132(lines 132 147) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L99(lines 99 182) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 77) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L248(lines 248 263) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L116(lines 116 131) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L50(lines 50 61) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L364(lines 364 379) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L232(lines 232 247) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L166(lines 166 177) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L100(lines 100 115) no Hoare annotation was computed. [2018-10-26 23:26:05,716 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L421 ceAbstractionStarter]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= main_~this_state~0 2)) (and .cse0 (= main_~q~0 0)) (and (= main_~this_state~0 3) (<= 4 main_~q~0)))) [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L348(lines 348 363) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L216(lines 216 231) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L183(lines 183 282) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L150(lines 150 161) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L332(lines 332 347) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L266(lines 266 277) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L200(lines 200 215) no Hoare annotation was computed. [2018-10-26 23:26:05,717 INFO L425 ceAbstractionStarter]: For program point L134(lines 134 145) no Hoare annotation was computed. [2018-10-26 23:26:05,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:26:05 BoogieIcfgContainer [2018-10-26 23:26:05,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:26:05,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:26:05,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:26:05,740 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:26:05,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:26:03" (3/4) ... [2018-10-26 23:26:05,744 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:26:05,749 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 23:26:05,750 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 23:26:05,757 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 23:26:05,757 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 23:26:05,786 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6cb42d8e-51e7-4083-b2e6-803324b86b60/bin-2019/utaipan/witness.graphml [2018-10-26 23:26:05,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:26:05,787 INFO L168 Benchmark]: Toolchain (without parser) took 3746.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 957.1 MB in the beginning and 965.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 144.6 MB. Max. memory is 11.5 GB. [2018-10-26 23:26:05,788 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:26:05,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.50 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 941.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:26:05,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.35 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:26:05,789 INFO L168 Benchmark]: Boogie Preprocessor took 32.64 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:26:05,789 INFO L168 Benchmark]: RCFGBuilder took 799.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:26:05,790 INFO L168 Benchmark]: TraceAbstraction took 2527.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.5 MB in the end (delta: 150.4 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:26:05,790 INFO L168 Benchmark]: Witness Printer took 47.10 ms. Allocated memory is still 1.2 GB. Free memory was 970.5 MB in the beginning and 965.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:26:05,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.50 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 941.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.35 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.64 ms. Allocated memory is still 1.0 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 799.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2527.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.5 MB in the end (delta: 150.4 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. * Witness Printer took 47.10 ms. Allocated memory is still 1.2 GB. Free memory was 970.5 MB in the beginning and 965.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 2) || (q == 3 && this_state == 2)) || (this_state <= 0 && q == 0)) || (this_state == 3 && 4 <= q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (this_state <= 0 && q == 0) || (this_state == 3 && 4 <= q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 1008 SDtfs, 337 SDslu, 455 SDs, 0 SdLazy, 217 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 49 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 10566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...