./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh --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 0816346248b67d4ea9c17aaea510056f7cd51786d8081f1e3a68c606118ae1c9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:44:24,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:44:24,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:44:24,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:44:24,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:44:24,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:44:24,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:44:24,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:44:24,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:44:24,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:44:24,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:44:24,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:44:24,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:44:24,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:44:24,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:44:24,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:44:24,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:44:24,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:44:24,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:44:24,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:44:24,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:44:24,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:44:24,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:44:24,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:44:24,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:44:24,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:44:24,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:44:24,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:44:24,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:44:24,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:44:24,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:44:24,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:44:24,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:44:24,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:44:24,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:44:24,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:44:24,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:44:24,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:44:24,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:44:24,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:44:24,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:44:24,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:44:24,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:44:24,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:44:24,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:44:24,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:44:24,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:44:24,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:44:24,794 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:44:24,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:44:24,795 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:44:24,795 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:44:24,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:44:24,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:44:24,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:44:24,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:44:24,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:44:24,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:44:24,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:24,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:44:24,797 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:44:24,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0816346248b67d4ea9c17aaea510056f7cd51786d8081f1e3a68c606118ae1c9 [2022-12-14 13:44:24,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:44:24,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:44:24,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:44:24,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:44:24,980 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:44:24,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2022-12-14 13:44:27,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:44:27,653 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:44:27,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2022-12-14 13:44:27,658 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/data/2c5c34626/1261d284daa0439199bd5381fbb0f939/FLAG0a0347d22 [2022-12-14 13:44:28,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/data/2c5c34626/1261d284daa0439199bd5381fbb0f939 [2022-12-14 13:44:28,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:44:28,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:44:28,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:28,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:44:28,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:44:28,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fcbdcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28, skipping insertion in model container [2022-12-14 13:44:28,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:44:28,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:44:28,242 WARN L237 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_506fc2a8-acb9-4b39-be43-d8350872dc2a/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-12-14 13:44:28,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:28,262 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:44:28,271 WARN L237 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_506fc2a8-acb9-4b39-be43-d8350872dc2a/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2022-12-14 13:44:28,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:28,287 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:44:28,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28 WrapperNode [2022-12-14 13:44:28,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:28,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:28,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:44:28,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:44:28,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,312 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2022-12-14 13:44:28,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:28,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:44:28,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:44:28,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:44:28,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:44:28,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:44:28,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:44:28,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:44:28,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (1/1) ... [2022-12-14 13:44:28,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:28,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:44:28,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:44:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:44:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:44:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:44:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:44:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:44:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:44:28,435 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:44:28,436 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:44:28,544 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:44:28,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:44:28,563 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:44:28,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28 BoogieIcfgContainer [2022-12-14 13:44:28,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:44:28,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:44:28,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:44:28,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:44:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:44:28" (1/3) ... [2022-12-14 13:44:28,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154866a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:28, skipping insertion in model container [2022-12-14 13:44:28,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:28" (2/3) ... [2022-12-14 13:44:28,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5154866a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:28, skipping insertion in model container [2022-12-14 13:44:28,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28" (3/3) ... [2022-12-14 13:44:28,574 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2022-12-14 13:44:28,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:44:28,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:44:28,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:44:28,640 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@601d68ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:44:28,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:44:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:44:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:44:28,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:28,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:28,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1760179562, now seen corresponding path program 1 times [2022-12-14 13:44:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:28,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366823552] [2022-12-14 13:44:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:28,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366823552] [2022-12-14 13:44:28,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366823552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:28,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:44:28,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:44:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229321263] [2022-12-14 13:44:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:44:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:44:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:28,992 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:29,087 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2022-12-14 13:44:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:44:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 13:44:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:29,094 INFO L225 Difference]: With dead ends: 41 [2022-12-14 13:44:29,094 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:44:29,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:44:29,098 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:29,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:44:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:44:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 13:44:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-12-14 13:44:29,123 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2022-12-14 13:44:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:29,124 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-12-14 13:44:29,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-12-14 13:44:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:44:29,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:29,125 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:29,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:44:29,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -731188297, now seen corresponding path program 1 times [2022-12-14 13:44:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:29,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350083167] [2022-12-14 13:44:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:29,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:29,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350083167] [2022-12-14 13:44:29,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350083167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:29,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:44:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:44:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383815261] [2022-12-14 13:44:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:44:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:44:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:29,246 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 13:44:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:29,302 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-12-14 13:44:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:44:29,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-12-14 13:44:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:29,304 INFO L225 Difference]: With dead ends: 33 [2022-12-14 13:44:29,305 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 13:44:29,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:44:29,307 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:29,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 70 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:29,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 13:44:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-12-14 13:44:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:44:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-12-14 13:44:29,319 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2022-12-14 13:44:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-12-14 13:44:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 13:44:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-12-14 13:44:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 13:44:29,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:29,321 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:44:29,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash 532552333, now seen corresponding path program 1 times [2022-12-14 13:44:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:29,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57686964] [2022-12-14 13:44:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:29,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:44:29,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:29,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57686964] [2022-12-14 13:44:29,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57686964] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:29,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773087255] [2022-12-14 13:44:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:29,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:29,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:29,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:29,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:44:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:29,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 13:44:29,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:44:29,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:44:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773087255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500259127] [2022-12-14 13:44:29,799 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 13:44:29,800 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:29,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:29,808 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:29,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:30,806 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 13:44:30,860 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:31,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '402#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:44:31,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:44:31,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-14 13:44:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433460255] [2022-12-14 13:44:31,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:44:31,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 13:44:31,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 13:44:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:44:31,823 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 13:44:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:31,970 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-12-14 13:44:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:44:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 31 [2022-12-14 13:44:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:31,971 INFO L225 Difference]: With dead ends: 35 [2022-12-14 13:44:31,971 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:44:31,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 13:44:31,973 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:31,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 91 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:44:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:44:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:44:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:44:31,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2022-12-14 13:44:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:31,975 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:44:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 13:44:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:44:31,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:44:31,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:44:31,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:44:32,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:32,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:44:32,248 INFO L899 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2022-12-14 13:44:32,248 INFO L899 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2022-12-14 13:44:32,248 INFO L895 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= (+ |ULTIMATE.start_main_~p~0#1| (* 2 |ULTIMATE.start_main_~ielen~0#1|)) (+ (* 2 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~bufsize_0~0#1|)) (<= 1 |ULTIMATE.start_main_~leader_len~0#1|)) [2022-12-14 13:44:32,249 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-12-14 13:44:32,249 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:44:32,249 INFO L902 garLoopResultBuilder]: At program point L54(lines 24 56) the Hoare annotation is: true [2022-12-14 13:44:32,249 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= (+ 2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~bufsize_0~0#1|) (<= (+ |ULTIMATE.start_main_~p~0#1| (* 2 |ULTIMATE.start_main_~ielen~0#1|)) (+ (* 2 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~bufsize_0~0#1|)) (<= 1 |ULTIMATE.start_main_~leader_len~0#1|)) [2022-12-14 13:44:32,249 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~p~0#1|) (<= (+ 2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~bufsize_0~0#1|) (<= (+ |ULTIMATE.start_main_~p~0#1| (* 2 |ULTIMATE.start_main_~ielen~0#1|)) (+ (* 2 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~bufsize_0~0#1|)) (<= 1 |ULTIMATE.start_main_~leader_len~0#1|)) [2022-12-14 13:44:32,249 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2022-12-14 13:44:32,250 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-12-14 13:44:32,251 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-12-14 13:44:32,251 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-12-14 13:44:32,251 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2022-12-14 13:44:32,251 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-12-14 13:44:32,251 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-12-14 13:44:32,251 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-12-14 13:44:32,255 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:44:32,258 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:44:32,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:44:32 BoogieIcfgContainer [2022-12-14 13:44:32,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:44:32,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:44:32,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:44:32,273 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:44:32,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28" (3/4) ... [2022-12-14 13:44:32,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:44:32,283 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 13:44:32,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-14 13:44:32,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 13:44:32,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 13:44:32,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:44:32,319 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:44:32,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:44:32,320 INFO L158 Benchmark]: Toolchain (without parser) took 4225.95ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 92.9MB in the beginning and 69.9MB in the end (delta: 23.1MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,320 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:44:32,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.41ms. Allocated memory is still 127.9MB. Free memory was 92.7MB in the beginning and 82.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.64ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,321 INFO L158 Benchmark]: Boogie Preprocessor took 16.70ms. Allocated memory is still 127.9MB. Free memory was 80.7MB in the beginning and 79.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:44:32,321 INFO L158 Benchmark]: RCFGBuilder took 235.27ms. Allocated memory is still 127.9MB. Free memory was 79.6MB in the beginning and 68.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,321 INFO L158 Benchmark]: TraceAbstraction took 3704.99ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 67.6MB in the beginning and 73.0MB in the end (delta: -5.4MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,322 INFO L158 Benchmark]: Witness Printer took 46.10ms. Allocated memory is still 197.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:44:32,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.41ms. Allocated memory is still 127.9MB. Free memory was 92.7MB in the beginning and 82.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.64ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.70ms. Allocated memory is still 127.9MB. Free memory was 80.7MB in the beginning and 79.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.27ms. Allocated memory is still 127.9MB. Free memory was 79.6MB in the beginning and 68.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3704.99ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 67.6MB in the beginning and 73.0MB in the end (delta: -5.4MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. * Witness Printer took 46.10ms. Allocated memory is still 197.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 57 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 12 PreInvPairs, 24 NumberOfFragments, 66 HoareAnnotationTreeSize, 12 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 6 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 56/65 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (1 <= p && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= leader_len RESULT: Ultimate proved your program to be correct! [2022-12-14 13:44:32,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_506fc2a8-acb9-4b39-be43-d8350872dc2a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE