./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/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_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8 --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 --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:21,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:21,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:21,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:21,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:21,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:21,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:21,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:21,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:21,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:21,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:21,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:21,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:21,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:21,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:21,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:21,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:21,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:21,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:21,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:21,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:21,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:21,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:21,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:21,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:21,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:21,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:21,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:21,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:21,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:21,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:21,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:21,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:21,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:21,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:21,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:21,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:21,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:21,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:21,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:21,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:21,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:59:21,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:21,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:21,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:21,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:21,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:21,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:21,384 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:59:21,384 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:21,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:21,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:59:21,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:59:21,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:21,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:59:21,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:59:21,386 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:59:21,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:21,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:59:21,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:59:21,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:59:21,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:21,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:21,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:21,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:21,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:21,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:59:21,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:21,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:21,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:21,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:21,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:21,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:21,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:21,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:21,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:21,392 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:59:21,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:59:21,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:21,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:21,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:21,393 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_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0816346248b67d4ea9c17aaea510056f7cd51786d8081f1e3a68c606118ae1c9 [2021-11-07 01:59:21,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:21,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:21,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:21,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:21,761 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:21,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-11-07 01:59:21,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/data/3b9f4a2b6/360a9d351c554b05bf7a0cd68a0bcd4f/FLAG0b630eaa3 [2021-11-07 01:59:22,424 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:22,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2021-11-07 01:59:22,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/data/3b9f4a2b6/360a9d351c554b05bf7a0cd68a0bcd4f/FLAG0b630eaa3 [2021-11-07 01:59:22,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/data/3b9f4a2b6/360a9d351c554b05bf7a0cd68a0bcd4f [2021-11-07 01:59:22,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:22,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:22,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:22,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:22,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:22,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:22" (1/1) ... [2021-11-07 01:59:22,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9f3432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:22, skipping insertion in model container [2021-11-07 01:59:22,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:22" (1/1) ... [2021-11-07 01:59:22,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:22,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:22,997 WARN L228 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_af17c875-710e-45ab-b2f2-d9b4c953e3df/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-11-07 01:59:23,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:23,026 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:23,042 WARN L228 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_af17c875-710e-45ab-b2f2-d9b4c953e3df/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-11-07 01:59:23,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:23,065 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:59:23,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23 WrapperNode [2021-11-07 01:59:23,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:23,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:23,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:59:23,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:59:23,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:23,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:59:23,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:59:23,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:59:23,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:23,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:23,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:23,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:23,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (1/1) ... [2021-11-07 01:59:23,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:23,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:23,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:23,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:59:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:23,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:59:23,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:23,642 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-07 01:59:23,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:23 BoogieIcfgContainer [2021-11-07 01:59:23,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:23,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:23,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:23,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:23,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:22" (1/3) ... [2021-11-07 01:59:23,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706be260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:23, skipping insertion in model container [2021-11-07 01:59:23,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:23" (2/3) ... [2021-11-07 01:59:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706be260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:23, skipping insertion in model container [2021-11-07 01:59:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:23" (3/3) ... [2021-11-07 01:59:23,680 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2021-11-07 01:59:23,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:23,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:59:23,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:23,827 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:59:23,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:59:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-11-07 01:59:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:59:23,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:23,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:23,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1998036431, now seen corresponding path program 1 times [2021-11-07 01:59:23,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:59:23,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240167628] [2021-11-07 01:59:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:23,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:59:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:24,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:59:24,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240167628] [2021-11-07 01:59:24,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240167628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:24,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:24,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:59:24,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835318495] [2021-11-07 01:59:24,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:59:24,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:59:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:59:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:59:24,183 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 19 states have internal predecessors, (30), 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) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-07 01:59:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:24,318 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-07 01:59:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:59:24,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2021-11-07 01:59:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:24,334 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:59:24,334 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 01:59:24,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:59:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 01:59:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-07 01:59:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-11-07 01:59:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-07 01:59:24,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2021-11-07 01:59:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:24,382 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-07 01:59:24,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-07 01:59:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-07 01:59:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:59:24,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:24,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:24,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:59:24,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash -262472012, now seen corresponding path program 1 times [2021-11-07 01:59:24,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:59:24,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601346351] [2021-11-07 01:59:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:24,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:59:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:24,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:59:24,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601346351] [2021-11-07 01:59:24,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601346351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:24,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:24,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:59:24,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883053932] [2021-11-07 01:59:24,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:59:24,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:59:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:59:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:59:24,524 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-07 01:59:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:24,588 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-07 01:59:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:59:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) Word has length 14 [2021-11-07 01:59:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:24,590 INFO L225 Difference]: With dead ends: 23 [2021-11-07 01:59:24,590 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 01:59:24,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:59:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 01:59:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-11-07 01:59:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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) [2021-11-07 01:59:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-07 01:59:24,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2021-11-07 01:59:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-07 01:59:24,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-07 01:59:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-07 01:59:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:59:24,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:24,601 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:59:24,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash -43605059, now seen corresponding path program 1 times [2021-11-07 01:59:24,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:59:24,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686636959] [2021-11-07 01:59:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:24,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:59:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:24,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:59:24,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686636959] [2021-11-07 01:59:24,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686636959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:59:24,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169169486] [2021-11-07 01:59:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:24,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:59:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:24,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:59:24,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:59:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:24,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:59:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:25,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:25,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169169486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:59:25,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078268140] [2021-11-07 01:59:25,608 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-07 01:59:25,608 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:59:25,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:59:25,621 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:59:25,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:59:25,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,674 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:59:25,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:59:25,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:59:25,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:59:25,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:59:25,715 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-07 01:59:25,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:25,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 01:59:25,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 01:59:25,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 01:59:25,751 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:59:25,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:25,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:25,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:25,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:59:25,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:59:25,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:59:25,819 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:59:25,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:25,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 01:59:25,856 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:59:25,856 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2021-11-07 01:59:25,885 INFO L180 QuantifierPusher]: treesize reduction 27, result has 79.4 percent of original size [2021-11-07 01:59:25,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:59:25,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-07 01:59:25,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:25,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-07 01:59:25,995 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.4 percent of original size [2021-11-07 01:59:26,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 01:59:26,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:26,031 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 147 [2021-11-07 01:59:26,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,186 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 16 iterations. Over-approximation may be very coarse. [2021-11-07 01:59:26,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:26,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:59:26,252 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 01:59:26,265 INFO L185 QuantifierPusher]: treesize reduction 24, result has 75.5 percent of original size 74 [2021-11-07 01:59:26,274 INFO L180 QuantifierPusher]: treesize reduction 24, result has 81.0 percent of original size [2021-11-07 01:59:26,292 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-11-07 01:59:26,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:26,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 01:59:26,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:26,519 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:59:28,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:59:28,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:59:28,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 01:59:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594875295] [2021-11-07 01:59:28,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:59:28,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:59:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:59:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:59:28,994 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-07 01:59:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:29,290 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-07 01:59:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:59:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) Word has length 19 [2021-11-07 01:59:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:29,292 INFO L225 Difference]: With dead ends: 26 [2021-11-07 01:59:29,292 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:59:29,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:59:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:59:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:59:29,294 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) [2021-11-07 01:59:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:59:29,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-07 01:59:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:29,295 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:59:29,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-07 01:59:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:59:29,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:59:29,299 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:59:29,299 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:59:29,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:59:29,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:59:29,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:29,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:29,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:29,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:59:29,642 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 01:59:29,642 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-07 01:59:29,642 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-07 01:59:29,642 INFO L857 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2021-11-07 01:59:29,642 INFO L857 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-11-07 01:59:29,643 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:59:29,643 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-07 01:59:29,643 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse1 (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0))) (.cse2 (<= 1 ULTIMATE.start_main_~p~0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 0) (<= .cse1 ULTIMATE.start_main_~bufsize_0~0) .cse2 (<= (+ ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~bufsize~0) ULTIMATE.start_main_~bufsize_0~0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse1 (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) .cse2))) [2021-11-07 01:59:29,643 INFO L857 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-11-07 01:59:29,643 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:59:29,644 INFO L860 garLoopResultBuilder]: At program point L54(lines 25 56) the Hoare annotation is: true [2021-11-07 01:59:29,644 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-07 01:59:29,644 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2021-11-07 01:59:29,644 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-07 01:59:29,644 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0)) (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) (<= 1 ULTIMATE.start_main_~p~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-07 01:59:29,644 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-07 01:59:29,644 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-11-07 01:59:29,645 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 (* 2 ULTIMATE.start_main_~ielen~0)) (+ (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~bufsize_0~0)) (<= 1 ULTIMATE.start_main_~p~0)) [2021-11-07 01:59:29,645 INFO L857 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2021-11-07 01:59:29,645 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-07 01:59:29,648 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:59:29,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:59:29,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:59:29 BoogieIcfgContainer [2021-11-07 01:59:29,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:59:29,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:59:29,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:59:29,668 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:59:29,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:23" (3/4) ... [2021-11-07 01:59:29,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:59:29,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 01:59:29,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 01:59:29,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:59:29,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:59:29,729 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:59:29,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:59:29,731 INFO L168 Benchmark]: Toolchain (without parser) took 6939.61 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 44.2 MB in the beginning and 96.1 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:29,731 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 86.0 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:29,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.99 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.0 MB in the beginning and 77.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.60 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,733 INFO L168 Benchmark]: Boogie Preprocessor took 55.35 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 74.8 MB in the end (delta: 752.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,734 INFO L168 Benchmark]: RCFGBuilder took 476.80 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 63.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,734 INFO L168 Benchmark]: TraceAbstraction took 6020.17 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 99.3 MB in the end (delta: -36.5 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,735 INFO L168 Benchmark]: Witness Printer took 62.07 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 96.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:29,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 86.0 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.99 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.0 MB in the beginning and 77.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.60 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.35 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 74.8 MB in the end (delta: 752.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 476.80 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 63.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6020.17 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 99.3 MB in the end (delta: -36.5 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.07 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 96.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - 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 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 59 SDslu, 93 SDs, 0 SdLazy, 95 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 10 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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 2 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((1 <= leader_len && i == 0) && p + 2 * ielen <= bufsize_0) && 1 <= p) && p + bufsize <= bufsize_0) || (((1 <= leader_len && 1 <= cond) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((p + 2 <= bufsize_0 && 1 <= leader_len) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p) && !(0 == cond) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((p + 2 <= bufsize_0 && 1 <= leader_len) && 1 <= cond) && p + 2 * ielen <= 2 * i + bufsize_0) && 1 <= p RESULT: Ultimate proved your program to be correct! [2021-11-07 01:59:29,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af17c875-710e-45ab-b2f2-d9b4c953e3df/bin/utaipan-UUZaoUuFF8/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