./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:32:24,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:24,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:24,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:24,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:24,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:24,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:24,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:24,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:24,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:24,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:24,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:24,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:24,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:24,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:24,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:24,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:24,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:24,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:24,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:24,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:24,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:24,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:24,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:24,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:24,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:24,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:24,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:24,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:24,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:24,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:24,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:24,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:24,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:24,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:24,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:24,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:24,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:24,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:24,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:24,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:24,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:24,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:24,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:24,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:24,502 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:24,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:24,502 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:24,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:24,503 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:24,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:24,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:24,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:24,503 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:24,504 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:24,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:24,504 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:24,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:24,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:24,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:24,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:24,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:24,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:24,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:24,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:24,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:24,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:24,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:24,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:24,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:24,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:24,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:24,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:24,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:24,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:24,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:24,509 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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2021-10-11 02:32:24,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:24,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:24,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:24,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:24,820 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:24,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-11 02:32:24,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/data/a46eacddf/68ce216415444b81a8ff8a767c96e7cd/FLAGad86f49f7 [2021-10-11 02:32:25,358 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:25,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-11 02:32:25,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/data/a46eacddf/68ce216415444b81a8ff8a767c96e7cd/FLAGad86f49f7 [2021-10-11 02:32:25,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/data/a46eacddf/68ce216415444b81a8ff8a767c96e7cd [2021-10-11 02:32:25,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:25,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:25,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:25,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:25,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:25,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ef563c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25, skipping insertion in model container [2021-10-11 02:32:25,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:25,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:25,952 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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-11 02:32:25,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:25,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:25,995 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_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-11 02:32:26,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:26,016 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:26,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26 WrapperNode [2021-10-11 02:32:26,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:26,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:26,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:26,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:26,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:26,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:26,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:26,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:26,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... [2021-10-11 02:32:26,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:26,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:26,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:26,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:26,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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 02:32:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:26,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:26,530 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-11 02:32:26,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:26 BoogieIcfgContainer [2021-10-11 02:32:26,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:26,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:26,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:26,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:26,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:25" (1/3) ... [2021-10-11 02:32:26,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf9873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:26, skipping insertion in model container [2021-10-11 02:32:26,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:26" (2/3) ... [2021-10-11 02:32:26,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf9873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:26, skipping insertion in model container [2021-10-11 02:32:26,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:26" (3/3) ... [2021-10-11 02:32:26,541 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2021-10-11 02:32:26,554 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:26,558 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-10-11 02:32:26,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-11 02:32:26,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:26,606 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:26,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:26,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:26,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:26,607 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:26,607 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:26,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:32:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:32:26,635 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,636 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash -275162128, now seen corresponding path program 1 times [2021-10-11 02:32:26,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:26,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088644800] [2021-10-11 02:32:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:26,768 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 02:32:26,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088644800] [2021-10-11 02:32:26,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:26,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866138534] [2021-10-11 02:32:26,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:32:26,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:32:26,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:32:26,792 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2021-10-11 02:32:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:26,819 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2021-10-11 02:32:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:32:26,820 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:32:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,830 INFO L225 Difference]: With dead ends: 150 [2021-10-11 02:32:26,830 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:32:26,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:32:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:32:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:32:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:32:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-11 02:32:26,875 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 6 [2021-10-11 02:32:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,876 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-11 02:32:26,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:32:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-11 02:32:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:32:26,877 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:26,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,879 INFO L82 PathProgramCache]: Analyzing trace with hash -282306008, now seen corresponding path program 1 times [2021-10-11 02:32:26,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:26,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404545567] [2021-10-11 02:32:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:26,951 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 02:32:26,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404545567] [2021-10-11 02:32:26,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:26,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469826635] [2021-10-11 02:32:26,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:26,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:26,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:26,955 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2021-10-11 02:32:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:27,169 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2021-10-11 02:32:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:27,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:32:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:27,176 INFO L225 Difference]: With dead ends: 78 [2021-10-11 02:32:27,177 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:32:27,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:32:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-10-11 02:32:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:32:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-11 02:32:27,205 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 6 [2021-10-11 02:32:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:27,205 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-11 02:32:27,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-11 02:32:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:27,206 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:27,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:27,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:27,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:27,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:27,207 INFO L82 PathProgramCache]: Analyzing trace with hash -712978197, now seen corresponding path program 1 times [2021-10-11 02:32:27,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:27,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7888209] [2021-10-11 02:32:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:27,253 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 02:32:27,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7888209] [2021-10-11 02:32:27,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:27,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:27,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886165357] [2021-10-11 02:32:27,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:27,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:27,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:27,256 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 4 states. [2021-10-11 02:32:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:27,359 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-10-11 02:32:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:27,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:32:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:27,360 INFO L225 Difference]: With dead ends: 74 [2021-10-11 02:32:27,360 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 02:32:27,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 02:32:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-11 02:32:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:32:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-10-11 02:32:27,369 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 8 [2021-10-11 02:32:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:27,369 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-10-11 02:32:27,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-10-11 02:32:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:32:27,370 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:27,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:27,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:27,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1098535586, now seen corresponding path program 1 times [2021-10-11 02:32:27,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:27,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845401933] [2021-10-11 02:32:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:27,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845401933] [2021-10-11 02:32:27,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204698352] [2021-10-11 02:32:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/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 02:32:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:27,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:32:27,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:27,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:27,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:27,993 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:32:27,994 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:32:28,046 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:32:28,046 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:32:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:28,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693626066] [2021-10-11 02:32:28,111 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:32:28,111 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:28,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:28,133 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:28,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:28,629 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:29,381 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-10-11 02:32:29,404 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:29,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:29,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2021-10-11 02:32:29,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185442101] [2021-10-11 02:32:29,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 02:32:29,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:29,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 02:32:29,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2021-10-11 02:32:29,407 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 19 states. [2021-10-11 02:32:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:29,806 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-10-11 02:32:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:29,807 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2021-10-11 02:32:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:29,809 INFO L225 Difference]: With dead ends: 85 [2021-10-11 02:32:29,809 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:29,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2021-10-11 02:32:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:29,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:32:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:29,813 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:29,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 02:32:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:29,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:30,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:32:30,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:30,342 INFO L258 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,343 INFO L262 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,343 INFO L258 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,343 INFO L262 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,343 INFO L262 CegarLoopResult]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,343 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,343 INFO L258 CegarLoopResult]: At program point L18-26(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,343 INFO L262 CegarLoopResult]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,343 INFO L258 CegarLoopResult]: At program point L18-29(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L258 CegarLoopResult]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,344 INFO L262 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L258 CegarLoopResult]: At program point L18-38(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,345 INFO L262 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L258 CegarLoopResult]: At program point L18-41(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L258 CegarLoopResult]: At program point L18-44(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,346 INFO L262 CegarLoopResult]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L265 CegarLoopResult]: At program point L18-47(lines 17 22) the Hoare annotation is: true [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point L54(lines 54 68) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point L54-1(lines 54 68) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,347 INFO L262 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-10-11 02:32:30,348 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,348 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:30,348 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,348 INFO L262 CegarLoopResult]: For program point L59(lines 59 63) no Hoare annotation was computed. [2021-10-11 02:32:30,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,355 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-11 02:32:30,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,356 INFO L258 CegarLoopResult]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~tagbuf_len~0) (< ULTIMATE.start_main_~t~0 (+ ULTIMATE.start_main_~tagbuf_len~0 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) [2021-10-11 02:32:30,356 INFO L262 CegarLoopResult]: For program point L48-3(lines 48 72) no Hoare annotation was computed. [2021-10-11 02:32:30,356 INFO L258 CegarLoopResult]: At program point L32-2(lines 32 44) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~t~0 (+ ULTIMATE.start_main_~tagbuf_len~0 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) (and (= ULTIMATE.start_main_~t~0 0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0))) [2021-10-11 02:32:30,357 INFO L262 CegarLoopResult]: For program point L32-3(lines 32 44) no Hoare annotation was computed. [2021-10-11 02:32:30,358 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,358 INFO L262 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2021-10-11 02:32:30,358 INFO L262 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2021-10-11 02:32:30,358 INFO L262 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2021-10-11 02:32:30,358 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:32:30,359 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,359 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,359 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,359 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,360 INFO L258 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,360 INFO L262 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,360 INFO L258 CegarLoopResult]: At program point L18-11(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,361 INFO L262 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,361 INFO L258 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-11 02:32:30,361 INFO L262 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:32:30,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:30 BoogieIcfgContainer [2021-10-11 02:32:30,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:30,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:30,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:30,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:30,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:26" (3/4) ... [2021-10-11 02:32:30,419 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:30,435 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-10-11 02:32:30,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:32:30,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:32:30,437 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:30,536 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15ae31d-9fec-4fd4-ba0f-ad856bbdccbe/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:30,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:30,537 INFO L168 Benchmark]: Toolchain (without parser) took 4773.26 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 96.8 MB in the beginning and 98.5 MB in the end (delta: -1.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,538 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 134.2 MB. Free memory is still 112.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:30,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.67 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 109.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.52 ms. Allocated memory is still 134.2 MB. Free memory was 109.0 MB in the beginning and 106.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,540 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 105.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,540 INFO L168 Benchmark]: RCFGBuilder took 449.11 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 81.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,541 INFO L168 Benchmark]: TraceAbstraction took 3880.07 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 81.0 MB in the beginning and 103.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,541 INFO L168 Benchmark]: Witness Printer took 121.36 ms. Allocated memory is still 161.5 MB. Free memory was 103.7 MB in the beginning and 98.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 134.2 MB. Free memory is still 112.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.67 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 109.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.52 ms. Allocated memory is still 134.2 MB. Free memory was 109.0 MB in the beginning and 106.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 105.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 449.11 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 81.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3880.07 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 81.0 MB in the beginning and 103.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. * Witness Printer took 121.36 ms. Allocated memory is still 161.5 MB. Free memory was 103.7 MB in the beginning and 98.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 16 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((t < tagbuf_len + 1 && 1 == cond) && 0 <= t) || (t == 0 && t <= tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((0 < tagbuf_len && t < tagbuf_len + 1) && 1 == cond) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(t == tagbuf_len) && 1 == cond) && 0 <= t) && t <= tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 341 SDslu, 93 SDs, 0 SdLazy, 231 SolverSat, 282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 46 NumberOfFragments, 195 HoareAnnotationTreeSize, 15 FomulaSimplifications, 317 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 190 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 5298 SizeOfPredicates, 8 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...