./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI --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 5826109f3da002ef221ffbad3510db88b48ab8f7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:16,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:16,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:16,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:16,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:16,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:16,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:16,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:16,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:16,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:16,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:16,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:16,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:16,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:16,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:16,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:16,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:16,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:16,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:16,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:16,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:16,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:16,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:16,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:16,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:16,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:16,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:16,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:16,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:16,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:16,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:16,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:16,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:16,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:16,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:16,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:16,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:16,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:16,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:16,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:16,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:16,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:16,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:16,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:16,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:16,453 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:16,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:16,453 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:16,453 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:16,454 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:16,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:16,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:16,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:16,455 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:16,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:16,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:16,456 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:16,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:16,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:16,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:16,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:16,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:16,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:16,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:16,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:16,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:16,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:16,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:16,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:16,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:16,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:16,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:16,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:16,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:16,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:16,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:16,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:16,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:16,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:16,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:16,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:16,463 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_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5826109f3da002ef221ffbad3510db88b48ab8f7 [2021-10-11 02:28:16,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:16,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:16,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:16,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:16,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:16,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:28:16,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/data/6deac499d/f4c6b462fb4c4df59d19bd914221554d/FLAG59c303647 [2021-10-11 02:28:17,496 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:17,497 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:28:17,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/data/6deac499d/f4c6b462fb4c4df59d19bd914221554d/FLAG59c303647 [2021-10-11 02:28:17,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/data/6deac499d/f4c6b462fb4c4df59d19bd914221554d [2021-10-11 02:28:17,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:17,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:17,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:17,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:17,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:17,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:17" (1/1) ... [2021-10-11 02:28:17,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362c48d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:17, skipping insertion in model container [2021-10-11 02:28:17,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:17" (1/1) ... [2021-10-11 02:28:17,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:17,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:18,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-11 02:28:18,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:18,251 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:18,275 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-10-11 02:28:18,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:18,341 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:18,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18 WrapperNode [2021-10-11 02:28:18,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:18,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:18,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:18,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:18,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:18,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:18,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:18,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:18,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:18,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:18,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:18,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:18,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:28:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:28:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-11 02:28:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:18,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:28:19,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:19,299 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-11 02:28:19,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:19 BoogieIcfgContainer [2021-10-11 02:28:19,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:19,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:19,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:19,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:19,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:17" (1/3) ... [2021-10-11 02:28:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfaee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:19, skipping insertion in model container [2021-10-11 02:28:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18" (2/3) ... [2021-10-11 02:28:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfaee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:19, skipping insertion in model container [2021-10-11 02:28:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:19" (3/3) ... [2021-10-11 02:28:19,311 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-10-11 02:28:19,326 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:19,330 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:19,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:19,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:19,379 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:19,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:19,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:19,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:19,379 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:19,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:19,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 02:28:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:19,400 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:19,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:19,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:19,408 INFO L82 PathProgramCache]: Analyzing trace with hash -804738571, now seen corresponding path program 1 times [2021-10-11 02:28:19,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:19,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786292941] [2021-10-11 02:28:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:19,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786292941] [2021-10-11 02:28:19,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:19,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:19,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582910005] [2021-10-11 02:28:19,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:19,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:19,665 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2021-10-11 02:28:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:19,712 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2021-10-11 02:28:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:19,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-10-11 02:28:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:19,729 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:28:19,729 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:28:19,733 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 [2021-10-11 02:28:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:28:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:28:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:28:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-11 02:28:19,775 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-10-11 02:28:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:19,775 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-11 02:28:19,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-11 02:28:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:28:19,777 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:19,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:19,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:19,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 943623498, now seen corresponding path program 1 times [2021-10-11 02:28:19,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338914372] [2021-10-11 02:28:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:19,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338914372] [2021-10-11 02:28:19,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608099800] [2021-10-11 02:28:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:19,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:19,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:20,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:20,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928504684] [2021-10-11 02:28:20,115 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-11 02:28:20,115 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:20,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:20,128 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:20,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:21,035 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:21,257 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:28:21,416 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-10-11 02:28:21,636 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-10-11 02:28:21,851 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-10-11 02:28:22,108 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-10-11 02:28:22,431 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-10-11 02:28:22,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:22,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 13 [2021-10-11 02:28:22,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175439210] [2021-10-11 02:28:22,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:28:22,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:22,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:28:22,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:28:22,502 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2021-10-11 02:28:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:22,668 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-10-11 02:28:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:28:22,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2021-10-11 02:28:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:22,674 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:28:22,675 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:28:22,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:28:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:28:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-11 02:28:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:28:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-11 02:28:22,690 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-11 02:28:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:22,699 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-11 02:28:22,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:28:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-11 02:28:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:28:22,700 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:22,700 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:22,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:28:22,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2038619526, now seen corresponding path program 1 times [2021-10-11 02:28:22,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:22,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197109662] [2021-10-11 02:28:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:28:22,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197109662] [2021-10-11 02:28:22,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645471901] [2021-10-11 02:28:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:23,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:23,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:28:23,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:28:23,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148327567] [2021-10-11 02:28:23,143 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-11 02:28:23,144 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:23,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:23,144 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:23,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:23,826 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:24,039 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:28:24,611 WARN L197 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-10-11 02:28:24,825 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-10-11 02:28:25,005 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-10-11 02:28:25,298 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-10-11 02:28:25,462 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-10-11 02:28:25,848 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-10-11 02:28:26,099 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-10-11 02:28:26,273 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-10-11 02:28:26,641 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-10-11 02:28:27,141 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2021-10-11 02:28:27,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:27,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2021-10-11 02:28:27,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453608006] [2021-10-11 02:28:27,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 02:28:27,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:27,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 02:28:27,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:28:27,144 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 17 states. [2021-10-11 02:28:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:27,380 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-10-11 02:28:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 02:28:27,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2021-10-11 02:28:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:27,382 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:28:27,382 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:28:27,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:28:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:28:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-11 02:28:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:28:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-10-11 02:28:27,390 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2021-10-11 02:28:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:27,391 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-10-11 02:28:27,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 02:28:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-10-11 02:28:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:28:27,392 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:27,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:27,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:27,599 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1680854923, now seen corresponding path program 1 times [2021-10-11 02:28:27,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:27,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220176682] [2021-10-11 02:28:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:27,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220176682] [2021-10-11 02:28:27,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781307444] [2021-10-11 02:28:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:27,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:27,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:27,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:27,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069927784] [2021-10-11 02:28:27,808 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-11 02:28:27,808 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:27,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:27,809 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:27,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:28,505 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:28,716 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:28:29,257 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-10-11 02:28:29,426 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-10-11 02:28:29,615 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-10-11 02:28:29,880 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-10-11 02:28:30,023 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-10-11 02:28:30,290 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-10-11 02:28:30,440 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-10-11 02:28:30,635 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-10-11 02:28:30,890 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-10-11 02:28:30,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:30,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [3, 3, 3] total 19 [2021-10-11 02:28:30,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531560631] [2021-10-11 02:28:30,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 02:28:30,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:30,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 02:28:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:30,903 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 15 states. [2021-10-11 02:28:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:31,105 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2021-10-11 02:28:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:28:31,107 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2021-10-11 02:28:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:31,108 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:28:31,108 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:28:31,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:28:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-10-11 02:28:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:28:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-10-11 02:28:31,117 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2021-10-11 02:28:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:31,117 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-10-11 02:28:31,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 02:28:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-10-11 02:28:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:28:31,118 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:31,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-11 02:28:31,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1045014988, now seen corresponding path program 1 times [2021-10-11 02:28:31,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:31,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049182233] [2021-10-11 02:28:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:31,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049182233] [2021-10-11 02:28:31,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709494041] [2021-10-11 02:28:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:31,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:31,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:31,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1838711536] [2021-10-11 02:28:31,548 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-11 02:28:31,549 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:31,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:31,549 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:31,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:32,142 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:32,328 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:28:32,823 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-10-11 02:28:33,003 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-10-11 02:28:33,169 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-10-11 02:28:33,504 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-10-11 02:28:33,694 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-10-11 02:28:33,932 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-10-11 02:28:34,109 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-10-11 02:28:34,632 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-10-11 02:28:35,167 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2021-10-11 02:28:35,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:35,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2021-10-11 02:28:35,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332799756] [2021-10-11 02:28:35,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 02:28:35,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 02:28:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-10-11 02:28:35,171 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 16 states. [2021-10-11 02:28:35,402 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-10-11 02:28:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,547 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-10-11 02:28:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:28:35,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2021-10-11 02:28:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,548 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:28:35,548 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:28:35,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:28:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:28:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2021-10-11 02:28:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 02:28:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-10-11 02:28:35,559 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2021-10-11 02:28:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,559 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-10-11 02:28:35,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 02:28:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-10-11 02:28:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:28:35,560 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,560 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] [2021-10-11 02:28:35,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:35,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:35,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1526188637, now seen corresponding path program 1 times [2021-10-11 02:28:35,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009670933] [2021-10-11 02:28:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:35,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009670933] [2021-10-11 02:28:35,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706164828] [2021-10-11 02:28:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:35,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:35,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089692772] [2021-10-11 02:28:35,971 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-11 02:28:35,971 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:35,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:35,972 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:35,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:36,722 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:36,896 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-10-11 02:28:37,388 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-10-11 02:28:37,538 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-10-11 02:28:37,688 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-10-11 02:28:37,991 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2021-10-11 02:28:38,133 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-10-11 02:28:38,304 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-10-11 02:28:38,480 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-10-11 02:28:38,612 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-10-11 02:28:38,864 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-10-11 02:28:38,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:38,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2021-10-11 02:28:38,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297192655] [2021-10-11 02:28:38,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 02:28:38,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:38,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 02:28:38,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:28:38,867 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 14 states. [2021-10-11 02:28:39,066 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-10-11 02:28:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:39,182 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-10-11 02:28:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:28:39,183 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2021-10-11 02:28:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:39,184 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:28:39,184 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:39,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:28:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:39,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-11 02:28:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:39,185 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:39,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 02:28:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:39,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:39,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:39,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:39,896 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-10-11 02:28:40,183 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2021-10-11 02:28:40,355 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2021-10-11 02:28:40,472 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2021-10-11 02:28:40,588 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2021-10-11 02:28:40,590 INFO L265 CegarLoopResult]: At program point L85(lines 58 86) the Hoare annotation is: true [2021-10-11 02:28:40,590 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:40,590 INFO L262 CegarLoopResult]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-10-11 02:28:40,590 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-11 02:28:40,591 INFO L258 CegarLoopResult]: At program point L70-8(line 70) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2021-10-11 02:28:40,591 INFO L262 CegarLoopResult]: For program point L70-9(line 70) no Hoare annotation was computed. [2021-10-11 02:28:40,591 INFO L262 CegarLoopResult]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2021-10-11 02:28:40,591 INFO L262 CegarLoopResult]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2021-10-11 02:28:40,592 INFO L258 CegarLoopResult]: At program point L63-4(lines 63 84) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string0.base|)) (.cse2 (= |#NULL.base| 0)) (.cse3 (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0)) (.cse4 (<= 0 |#t~string1.base|)) (.cse5 (= |ULTIMATE.start_main_~#A~0.offset| 0)) (.cse6 (<= 0 |ULTIMATE.start_main_~#A~0.base|)) (.cse7 (<= 8 ULTIMATE.start_main_~i~1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (= |#t~string0.offset| 0)) (.cse10 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse1 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse1 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse1 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) .cse2 (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) .cse3 .cse4 .cse5 (<= |#t~string1.offset| 0) .cse6 (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) .cse7 (<= 0 |#t~string1.offset|) .cse8 (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) .cse9 .cse10) (and (= |#t~string1.offset| 0) .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| 8)) 0) (= |ULTIMATE.start_parse_expression_list_#in~str.offset| |ULTIMATE.start_main_~#A~0.offset|) .cse2 (= (select |#length| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) 2) (= ULTIMATE.start_parse_expression_list_~str.offset |ULTIMATE.start_parse_expression_list_#in~str.offset|) (= |ULTIMATE.start_parse_expression_list_#in~str.base| |ULTIMATE.start_main_~#A~0.base|) (not (= ULTIMATE.start_parse_expression_list_~str.base 0)) (= ULTIMATE.start_parse_expression_list_~start~0 0) (= ULTIMATE.start_parse_expression_list_~str.base |ULTIMATE.start_parse_expression_list_#in~str.base|) .cse3 .cse4 .cse5 (= (+ ULTIMATE.start_parse_expression_list_~i~0 1) 0) .cse6 (< |#StackHeapBarrier| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= (+ ULTIMATE.start_parse_expression_list_~j~0 1) 0) .cse7 (= (select |#valid| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) 1) .cse8 .cse9 .cse10))) [2021-10-11 02:28:40,592 INFO L262 CegarLoopResult]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2021-10-11 02:28:40,592 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:28:40,593 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (let ((.cse1 (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)))) (and (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_r_strncpy_~dest.offset |ULTIMATE.start_r_strncpy_#in~dest.offset|) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) .cse1 (<= ULTIMATE.start_parse_expression_list_~start~0 ULTIMATE.start_parse_expression_list_~j~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| |ULTIMATE.start_r_strncpy_#in~dest.offset|) (= (+ ULTIMATE.start_parse_expression_list_~start~0 |ULTIMATE.start_r_strncpy_#in~n|) (+ ULTIMATE.start_parse_expression_list_~j~0 1)) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (= (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~start~0) |ULTIMATE.start_r_strncpy_#in~src.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (= ULTIMATE.start_parse_expression_list_~str.base |ULTIMATE.start_r_strncpy_#in~src.base|) (<= 8 ULTIMATE.start_main_~i~1) (= |#NULL.offset| 0) (= (ite .cse1 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (<= 0 |#StackHeapBarrier|) (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (= ULTIMATE.start_r_strncpy_~src.offset |ULTIMATE.start_r_strncpy_#in~src.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 |#t~string1.base|) (= ULTIMATE.start_r_strncpy_~dest.base |ULTIMATE.start_r_strncpy_#in~dest.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (= ULTIMATE.start_r_strncpy_~n |ULTIMATE.start_r_strncpy_#in~n|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (= ULTIMATE.start_r_strncpy_~src.base |ULTIMATE.start_r_strncpy_#in~src.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0.base| |ULTIMATE.start_r_strncpy_#in~dest.base|) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (= |#t~string0.offset| 0))) [2021-10-11 02:28:40,593 INFO L258 CegarLoopResult]: At program point L73(lines 73 75) the Hoare annotation is: (and (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= ULTIMATE.start_parse_expression_list_~start~0 ULTIMATE.start_parse_expression_list_~j~0) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2021-10-11 02:28:40,593 INFO L262 CegarLoopResult]: For program point L65(lines 65 83) no Hoare annotation was computed. [2021-10-11 02:28:40,593 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:28:40,593 INFO L258 CegarLoopResult]: At program point L90-3(lines 90 92) the Hoare annotation is: (and (<= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (= |#NULL.base| 0) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~i~1) (= |#t~string0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2021-10-11 02:28:40,593 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:28:40,593 INFO L262 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2021-10-11 02:28:40,593 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:40,594 INFO L262 CegarLoopResult]: For program point L67-3(line 67) no Hoare annotation was computed. [2021-10-11 02:28:40,594 INFO L258 CegarLoopResult]: At program point L67-5(line 67) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2021-10-11 02:28:40,594 INFO L262 CegarLoopResult]: For program point L67-6(line 67) no Hoare annotation was computed. [2021-10-11 02:28:40,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:40 BoogieIcfgContainer [2021-10-11 02:28:40,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:40,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:40,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:40,627 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:40,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:19" (3/4) ... [2021-10-11 02:28:40,644 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:40,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-11 02:28:40,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:28:40,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:40,660 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:40,697 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((0 <= str && \old(cond) == cond) && dest == dest) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && j < start + 1) && start <= j) && str2 == dest) && start + \old(n) == j + 1) && 0 <= i) && str2 == 0) && 0 <= A) && str + start == src) && 0 <= start) && str == src) && 8 <= i) && #NULL == 0) && (if j < start + 1 then 1 else 0) == \old(cond)) && 0 <= str2) && 0 <= unknown-#StackHeapBarrier-unknown) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0) && 0 <= "0") && src == src) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && dest == dest) && A == 0) && n == \old(n)) && 0 <= str) && src == src) && str2 == dest) && str <= 0) && "0" == 0 [2021-10-11 02:28:40,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2538f388-a376-489c-8537-e34f5a02e12a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:40,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:40,745 INFO L168 Benchmark]: Toolchain (without parser) took 22903.97 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 78.2 MB in the beginning and 207.2 MB in the end (delta: -129.0 MB). Peak memory consumption was 131.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,746 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:40,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.64 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 85.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,748 INFO L168 Benchmark]: Boogie Preprocessor took 32.11 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 81.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,748 INFO L168 Benchmark]: RCFGBuilder took 881.57 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 77.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,749 INFO L168 Benchmark]: TraceAbstraction took 21322.81 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 76.6 MB in the beginning and 73.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,750 INFO L168 Benchmark]: Witness Printer took 117.71 ms. Allocated memory is still 234.9 MB. Free memory was 73.3 MB in the beginning and 207.2 MB in the end (delta: -133.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:40,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.64 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 85.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.11 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 81.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 881.57 ms. Allocated memory is still 111.1 MB. Free memory was 81.6 MB in the beginning and 77.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21322.81 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 76.6 MB in the beginning and 73.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.1 GB. * Witness Printer took 117.71 ms. Allocated memory is still 234.9 MB. Free memory was 73.3 MB in the beginning and 207.2 MB in the end (delta: -133.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0 && 0 <= "0") && unknown-#memory_int-unknown[A][A + 8] == 0) && str == A) && #NULL == 0) && unknown-#length-unknown[str2] == 2) && str == str) && str == A) && !(str == 0)) && start == 0) && str == str) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && i + 1 == 0) && 0 <= A) && unknown-#StackHeapBarrier-unknown < str2) && j + 1 == 0) && 8 <= i) && \valid[str2] == 1) && #NULL == 0) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0 && 0 <= "0") && 0 <= A) && #NULL == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= i) && "0" == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((0 <= str && \old(cond) == cond) && dest == dest) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && j < start + 1) && start <= j) && str2 == dest) && start + \old(n) == j + 1) && 0 <= i) && str2 == 0) && 0 <= A) && str + start == src) && 0 <= start) && str == src) && 8 <= i) && #NULL == 0) && (if j < start + 1 then 1 else 0) == \old(cond)) && 0 <= str2) && 0 <= unknown-#StackHeapBarrier-unknown) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0) && 0 <= "0") && src == src) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && dest == dest) && A == 0) && n == \old(n)) && 0 <= str) && src == src) && str2 == dest) && str <= 0) && "0" == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && str2 <= 0) && 0 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: (((((((((((((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0 && 0 <= "0") && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && start <= j) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 237 SDslu, 140 SDs, 0 SdLazy, 537 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 222 SyntacticMatches, 10 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 594 HoareAnnotationTreeSize, 7 FomulaSimplifications, 3554 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 574 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 7347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 48/63 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: OVERALL_TIME[ms]: 3646, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 81, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 151, TOOLS_POST_TIME[ms]: 2032, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 151, TOOLS_QUANTIFIERELIM_TIME[ms]: 1983, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 181, FLUID_QUERY_TIME[ms]: 15, FLUID_QUERIES: 311, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME[ms]: 347, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 903, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME[ms]: 81, DOMAIN_ISBOTTOM_APPLICATIONS: 81, DOMAIN_ISBOTTOM_TIME[ms]: 121, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2052, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2052, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 9, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 51, DAG_COMPRESSION_PROCESSED_NODES: 1084, DAG_COMPRESSION_RETAINED_NODES: 254, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...