./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c -s /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:36:23,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:36:23,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:36:23,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:36:23,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:36:23,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:36:23,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:36:23,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:36:23,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:36:23,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:36:23,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:36:23,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:36:23,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:36:23,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:36:23,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:36:23,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:36:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:36:23,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:36:23,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:36:23,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:36:23,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:36:23,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:36:23,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:36:23,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:36:23,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:36:23,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:36:23,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:36:23,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:36:23,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:36:23,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:36:23,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:36:23,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:36:23,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:36:23,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:36:23,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:36:23,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:36:23,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:36:23,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:36:23,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:36:23,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:36:23,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:36:23,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:36:23,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:36:23,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:36:23,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:36:23,301 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:36:23,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:36:23,301 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:36:23,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:36:23,301 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:36:23,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:36:23,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:36:23,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:36:23,302 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:36:23,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:36:23,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:36:23,302 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:36:23,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:36:23,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:36:23,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:36:23,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:36:23,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:36:23,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:36:23,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:36:23,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:36:23,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:36:23,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:36:23,306 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 [2020-12-09 20:36:23,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:36:23,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:36:23,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:36:23,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:36:23,548 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:36:23,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-12-09 20:36:23,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/data/e5b2acd63/c235695abf4347649a95dfcde1c40158/FLAG9425b1085 [2020-12-09 20:36:24,037 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:36:24,037 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-12-09 20:36:24,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/data/e5b2acd63/c235695abf4347649a95dfcde1c40158/FLAG9425b1085 [2020-12-09 20:36:24,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/data/e5b2acd63/c235695abf4347649a95dfcde1c40158 [2020-12-09 20:36:24,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:36:24,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:36:24,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:36:24,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:36:24,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:36:24,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a916403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24, skipping insertion in model container [2020-12-09 20:36:24,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:36:24,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:36:24,314 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2020-12-09 20:36:24,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:36:24,333 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:36:24,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2020-12-09 20:36:24,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:36:24,416 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:36:24,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24 WrapperNode [2020-12-09 20:36:24,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:36:24,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:36:24,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:36:24,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:36:24,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:36:24,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:36:24,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:36:24,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:36:24,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... [2020-12-09 20:36:24,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:36:24,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:36:24,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:36:24,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:36:24,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/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 [2020-12-09 20:36:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:36:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:36:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:36:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:36:26,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:36:26,036 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 20:36:26,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:26 BoogieIcfgContainer [2020-12-09 20:36:26,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:36:26,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:36:26,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:36:26,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:36:26,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:36:24" (1/3) ... [2020-12-09 20:36:26,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe63ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:36:26, skipping insertion in model container [2020-12-09 20:36:26,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:24" (2/3) ... [2020-12-09 20:36:26,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fe63ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:36:26, skipping insertion in model container [2020-12-09 20:36:26,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:26" (3/3) ... [2020-12-09 20:36:26,047 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-12-09 20:36:26,061 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:36:26,065 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:36:26,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:36:26,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:36:26,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:36:26,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:36:26,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:36:26,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:36:26,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:36:26,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:36:26,098 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:36:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 20:36:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 20:36:26,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:26,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:26,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:26,123 INFO L82 PathProgramCache]: Analyzing trace with hash 925962767, now seen corresponding path program 1 times [2020-12-09 20:36:26,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:26,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308519758] [2020-12-09 20:36:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:26,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308519758] [2020-12-09 20:36:26,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:26,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:36:26,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134044099] [2020-12-09 20:36:26,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:26,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:26,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:26,417 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 20:36:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:26,806 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 20:36:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:26,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 20:36:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:26,819 INFO L225 Difference]: With dead ends: 251 [2020-12-09 20:36:26,819 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 20:36:26,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 20:36:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 20:36:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 20:36:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-12-09 20:36:26,862 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-12-09 20:36:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:26,863 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-12-09 20:36:26,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-12-09 20:36:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 20:36:26,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:26,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:26,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:36:26,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:26,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:26,868 INFO L82 PathProgramCache]: Analyzing trace with hash -859408920, now seen corresponding path program 1 times [2020-12-09 20:36:26,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:26,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154476911] [2020-12-09 20:36:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:26,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154476911] [2020-12-09 20:36:26,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:26,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:36:26,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487404498] [2020-12-09 20:36:26,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:26,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:26,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:26,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:26,993 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-12-09 20:36:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:27,273 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2020-12-09 20:36:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:27,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-09 20:36:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:27,276 INFO L225 Difference]: With dead ends: 405 [2020-12-09 20:36:27,276 INFO L226 Difference]: Without dead ends: 243 [2020-12-09 20:36:27,277 INFO L677 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 [2020-12-09 20:36:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-09 20:36:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-12-09 20:36:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 20:36:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 398 transitions. [2020-12-09 20:36:27,291 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 398 transitions. Word has length 85 [2020-12-09 20:36:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:27,292 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 398 transitions. [2020-12-09 20:36:27,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 398 transitions. [2020-12-09 20:36:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 20:36:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:27,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:27,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:36:27,296 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2010269234, now seen corresponding path program 1 times [2020-12-09 20:36:27,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:27,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91816230] [2020-12-09 20:36:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:27,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91816230] [2020-12-09 20:36:27,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119037875] [2020-12-09 20:36:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:27,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:36:27,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 20:36:27,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 20:36:27,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:36:27,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 20:36:27,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791194825] [2020-12-09 20:36:27,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:27,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:27,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:27,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:36:27,674 INFO L87 Difference]: Start difference. First operand 243 states and 398 transitions. Second operand 3 states. [2020-12-09 20:36:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:28,011 INFO L93 Difference]: Finished difference Result 725 states and 1191 transitions. [2020-12-09 20:36:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:28,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 20:36:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:28,015 INFO L225 Difference]: With dead ends: 725 [2020-12-09 20:36:28,015 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 20:36:28,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:36:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 20:36:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 20:36:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 20:36:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 758 transitions. [2020-12-09 20:36:28,042 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 758 transitions. Word has length 89 [2020-12-09 20:36:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:28,043 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 758 transitions. [2020-12-09 20:36:28,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 758 transitions. [2020-12-09 20:36:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 20:36:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:28,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:28,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 20:36:28,247 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2106591652, now seen corresponding path program 1 times [2020-12-09 20:36:28,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:28,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564147856] [2020-12-09 20:36:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 20:36:28,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564147856] [2020-12-09 20:36:28,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837084090] [2020-12-09 20:36:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:28,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:36:28,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:36:28,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:36:28,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:36:28,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 20:36:28,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114627053] [2020-12-09 20:36:28,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:36:28,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:36:28,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:28,532 INFO L87 Difference]: Start difference. First operand 483 states and 758 transitions. Second operand 4 states. [2020-12-09 20:36:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:28,897 INFO L93 Difference]: Finished difference Result 1125 states and 1790 transitions. [2020-12-09 20:36:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:36:28,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-09 20:36:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:28,901 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 20:36:28,902 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 20:36:28,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 20:36:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 20:36:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 20:36:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 943 transitions. [2020-12-09 20:36:28,923 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 943 transitions. Word has length 98 [2020-12-09 20:36:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:28,923 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 943 transitions. [2020-12-09 20:36:28,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:36:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 943 transitions. [2020-12-09 20:36:28,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 20:36:28,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:28,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:29,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:29,127 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1002063314, now seen corresponding path program 1 times [2020-12-09 20:36:29,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:29,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929199735] [2020-12-09 20:36:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 20:36:29,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929199735] [2020-12-09 20:36:29,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:29,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:36:29,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716521898] [2020-12-09 20:36:29,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:29,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:29,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:29,165 INFO L87 Difference]: Start difference. First operand 643 states and 943 transitions. Second operand 3 states. [2020-12-09 20:36:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:29,470 INFO L93 Difference]: Finished difference Result 1845 states and 2695 transitions. [2020-12-09 20:36:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:29,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 20:36:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:29,477 INFO L225 Difference]: With dead ends: 1845 [2020-12-09 20:36:29,477 INFO L226 Difference]: Without dead ends: 1203 [2020-12-09 20:36:29,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-12-09 20:36:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-12-09 20:36:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 20:36:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1613 transitions. [2020-12-09 20:36:29,504 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1613 transitions. Word has length 99 [2020-12-09 20:36:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:29,504 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1613 transitions. [2020-12-09 20:36:29,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1613 transitions. [2020-12-09 20:36:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 20:36:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:29,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:29,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:36:29,508 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash -495516182, now seen corresponding path program 1 times [2020-12-09 20:36:29,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:29,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237386960] [2020-12-09 20:36:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-09 20:36:29,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237386960] [2020-12-09 20:36:29,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167334978] [2020-12-09 20:36:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:29,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:36:29,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 20:36:29,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 20:36:29,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:36:29,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 20:36:29,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192945152] [2020-12-09 20:36:29,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:29,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:29,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:29,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:36:29,817 INFO L87 Difference]: Start difference. First operand 1203 states and 1613 transitions. Second operand 3 states. [2020-12-09 20:36:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:30,012 INFO L93 Difference]: Finished difference Result 2325 states and 3100 transitions. [2020-12-09 20:36:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:30,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 20:36:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:30,019 INFO L225 Difference]: With dead ends: 2325 [2020-12-09 20:36:30,019 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 20:36:30,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:36:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 20:36:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 20:36:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 20:36:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1433 transitions. [2020-12-09 20:36:30,051 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1433 transitions. Word has length 104 [2020-12-09 20:36:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:30,051 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1433 transitions. [2020-12-09 20:36:30,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1433 transitions. [2020-12-09 20:36:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-09 20:36:30,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:30,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:30,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:30,255 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash -195355135, now seen corresponding path program 1 times [2020-12-09 20:36:30,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:30,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553107235] [2020-12-09 20:36:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 20:36:30,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553107235] [2020-12-09 20:36:30,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927422027] [2020-12-09 20:36:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:30,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:36:30,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 20:36:30,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 20:36:30,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:36:30,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 20:36:30,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253154849] [2020-12-09 20:36:30,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:30,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:30,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:30,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:30,586 INFO L87 Difference]: Start difference. First operand 1123 states and 1433 transitions. Second operand 3 states. [2020-12-09 20:36:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:30,886 INFO L93 Difference]: Finished difference Result 2485 states and 3195 transitions. [2020-12-09 20:36:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:30,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-09 20:36:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:30,892 INFO L225 Difference]: With dead ends: 2485 [2020-12-09 20:36:30,892 INFO L226 Difference]: Without dead ends: 1363 [2020-12-09 20:36:30,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-12-09 20:36:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2020-12-09 20:36:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-12-09 20:36:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1683 transitions. [2020-12-09 20:36:30,914 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1683 transitions. Word has length 122 [2020-12-09 20:36:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:30,915 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1683 transitions. [2020-12-09 20:36:30,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1683 transitions. [2020-12-09 20:36:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-09 20:36:30,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:30,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:31,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:31,118 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1641398828, now seen corresponding path program 1 times [2020-12-09 20:36:31,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069348853] [2020-12-09 20:36:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 20:36:31,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069348853] [2020-12-09 20:36:31,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:31,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:36:31,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722023123] [2020-12-09 20:36:31,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:36:31,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:36:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:36:31,182 INFO L87 Difference]: Start difference. First operand 1363 states and 1683 transitions. Second operand 3 states. [2020-12-09 20:36:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:31,452 INFO L93 Difference]: Finished difference Result 3283 states and 4044 transitions. [2020-12-09 20:36:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:36:31,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-12-09 20:36:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:31,452 INFO L225 Difference]: With dead ends: 3283 [2020-12-09 20:36:31,452 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:36:31,455 INFO L677 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 [2020-12-09 20:36:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:36:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:36:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:36:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:36:31,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2020-12-09 20:36:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:31,456 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:36:31,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:36:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:36:31,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:36:31,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:36:31,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 20:36:31,534 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 20:36:31,535 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 20:36:31,536 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L593(line 593) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 20:36:31,537 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 593) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 20:36:31,538 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 20:36:31,539 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 20:36:31,540 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 20:36:31,541 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 20:36:31,542 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 20:36:31,542 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 20:36:31,542 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 20:36:31,542 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 20:36:31,542 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 20:36:31,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:36:31 BoogieIcfgContainer [2020-12-09 20:36:31,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:36:31,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:36:31,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:36:31,554 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:36:31,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:26" (3/4) ... [2020-12-09 20:36:31,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:36:31,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 20:36:31,578 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 20:36:31,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 20:36:31,580 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 20:36:31,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_daea7d60-e08c-4d8d-a559-4f2d3d5fa3f9/bin/utaipan/witness.graphml [2020-12-09 20:36:31,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:36:31,685 INFO L168 Benchmark]: Toolchain (without parser) took 7622.11 ms. Allocated memory was 92.3 MB in the beginning and 297.8 MB in the end (delta: 205.5 MB). Free memory was 49.3 MB in the beginning and 162.3 MB in the end (delta: -112.9 MB). Peak memory consumption was 94.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,686 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:36:31,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.06 ms. Allocated memory is still 92.3 MB. Free memory was 49.2 MB in the beginning and 46.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.63 ms. Allocated memory is still 92.3 MB. Free memory was 46.9 MB in the beginning and 41.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,687 INFO L168 Benchmark]: Boogie Preprocessor took 49.48 ms. Allocated memory is still 92.3 MB. Free memory was 41.5 MB in the beginning and 64.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,687 INFO L168 Benchmark]: RCFGBuilder took 1506.21 ms. Allocated memory was 92.3 MB in the beginning and 180.4 MB in the end (delta: 88.1 MB). Free memory was 64.9 MB in the beginning and 91.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,688 INFO L168 Benchmark]: TraceAbstraction took 5513.18 ms. Allocated memory was 180.4 MB in the beginning and 297.8 MB in the end (delta: 117.4 MB). Free memory was 90.6 MB in the beginning and 176.9 MB in the end (delta: -86.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,688 INFO L168 Benchmark]: Witness Printer took 130.37 ms. Allocated memory is still 297.8 MB. Free memory was 176.9 MB in the beginning and 162.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:31,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.06 ms. Allocated memory is still 92.3 MB. Free memory was 49.2 MB in the beginning and 46.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.63 ms. Allocated memory is still 92.3 MB. Free memory was 46.9 MB in the beginning and 41.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.48 ms. Allocated memory is still 92.3 MB. Free memory was 41.5 MB in the beginning and 64.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1506.21 ms. Allocated memory was 92.3 MB in the beginning and 180.4 MB in the end (delta: 88.1 MB). Free memory was 64.9 MB in the beginning and 91.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5513.18 ms. Allocated memory was 180.4 MB in the beginning and 297.8 MB in the end (delta: 117.4 MB). Free memory was 90.6 MB in the beginning and 176.9 MB in the end (delta: -86.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * Witness Printer took 130.37 ms. Allocated memory is still 297.8 MB. Free memory was 176.9 MB in the beginning and 162.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 593]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 505 SDtfs, 719 SDslu, 40 SDs, 0 SdLazy, 1880 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 841 GetRequests, 820 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 628 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1616 ConstructedInterpolants, 0 QuantifiedInterpolants, 330670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1264 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 531/553 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...