./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63816408f16166958351bc134d9ad3d8551cdcd0 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:13:14,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:13:14,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:13:14,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:13:14,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:13:14,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:13:14,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:13:14,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:13:14,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:13:14,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:13:14,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:13:14,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:13:14,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:13:14,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:13:14,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:13:14,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:13:14,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:13:14,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:13:14,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:13:14,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:13:14,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:13:14,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:13:14,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:13:14,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:13:14,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:13:14,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:13:14,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:13:14,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:13:14,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:13:14,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:13:14,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:13:14,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:13:14,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:13:14,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:13:14,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:13:14,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:13:14,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:13:14,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:13:14,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:13:14,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:13:14,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:13:14,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:13:14,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:13:14,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:13:14,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:13:14,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:13:14,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:13:14,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:13:14,967 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:13:14,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:13:14,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:13:14,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:13:14,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:13:14,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:13:14,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:13:14,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:13:14,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:13:14,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:13:14,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:13:14,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:13:14,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:13:14,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:13:14,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:13:14,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:13:14,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:13:14,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:13:14,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:13:14,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:13:14,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:13:14,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:13:14,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:13:14,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:13:14,976 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_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63816408f16166958351bc134d9ad3d8551cdcd0 [2021-10-13 00:13:15,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:13:15,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:13:15,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:13:15,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:13:15,278 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:13:15,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-10-13 00:13:15,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/data/87274259e/e5f4ac44a6d34cdba0bbcf93e169eb54/FLAG1fcf4c62b [2021-10-13 00:13:15,894 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:13:15,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-10-13 00:13:15,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/data/87274259e/e5f4ac44a6d34cdba0bbcf93e169eb54/FLAG1fcf4c62b [2021-10-13 00:13:16,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/data/87274259e/e5f4ac44a6d34cdba0bbcf93e169eb54 [2021-10-13 00:13:16,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:13:16,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:13:16,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:13:16,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:13:16,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:13:16,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df6dc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16, skipping insertion in model container [2021-10-13 00:13:16,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:13:16,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:13:16,366 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_26f45151-74d0-4d19-afe3-59fcc790124e/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-10-13 00:13:16,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:13:16,398 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:13:16,417 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_26f45151-74d0-4d19-afe3-59fcc790124e/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-10-13 00:13:16,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:13:16,447 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:13:16,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16 WrapperNode [2021-10-13 00:13:16,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:13:16,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:13:16,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:13:16,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:13:16,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:13:16,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:13:16,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:13:16,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:13:16,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:13:16,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:13:16,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:13:16,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:13:16,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (1/1) ... [2021-10-13 00:13:16,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:13:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:16,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:13:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:13:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:13:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:13:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:13:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:13:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:13:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:13:16,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:13:16,857 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 00:13:16,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:16 BoogieIcfgContainer [2021-10-13 00:13:16,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:13:16,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:13:16,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:13:16,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:13:16,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:13:16" (1/3) ... [2021-10-13 00:13:16,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8b9540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:13:16, skipping insertion in model container [2021-10-13 00:13:16,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:16" (2/3) ... [2021-10-13 00:13:16,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8b9540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:13:16, skipping insertion in model container [2021-10-13 00:13:16,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:16" (3/3) ... [2021-10-13 00:13:16,887 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-10-13 00:13:16,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:13:16,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:13:16,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:13:16,964 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, mConcurrency=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 [2021-10-13 00:13:16,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:13:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-13 00:13:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 00:13:16,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:16,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 00:13:16,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:13:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-10-13 00:13:17,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:17,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527618523] [2021-10-13 00:13:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:17,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:17,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:17,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527618523] [2021-10-13 00:13:17,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527618523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:17,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:17,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:13:17,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131067650] [2021-10-13 00:13:17,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:17,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:17,348 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-13 00:13:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:17,432 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-13 00:13:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:13:17,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-13 00:13:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:17,442 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:13:17,443 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 00:13:17,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 00:13:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-10-13 00:13:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-13 00:13:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 00:13:17,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-13 00:13:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:17,478 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 00:13:17,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-13 00:13:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 00:13:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:13:17,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:17,479 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:17,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:13:17,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:13:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2021-10-13 00:13:17,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:17,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674864078] [2021-10-13 00:13:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:17,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:17,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:17,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674864078] [2021-10-13 00:13:17,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674864078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:17,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476257384] [2021-10-13 00:13:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:17,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:17,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:17,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:13:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:17,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:13:17,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:17,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476257384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:17,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:17,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-10-13 00:13:17,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97881230] [2021-10-13 00:13:17,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:13:17,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:17,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:13:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:13:17,979 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-10-13 00:13:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:18,061 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-13 00:13:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:13:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) Word has length 9 [2021-10-13 00:13:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:18,064 INFO L225 Difference]: With dead ends: 19 [2021-10-13 00:13:18,064 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 00:13:18,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:13:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 00:13:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-10-13 00:13:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-10-13 00:13:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 00:13:18,077 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-13 00:13:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:18,078 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 00:13:18,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-10-13 00:13:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 00:13:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:13:18,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:18,081 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2021-10-13 00:13:18,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 00:13:18,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:18,293 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:13:18,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2021-10-13 00:13:18,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:18,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252627850] [2021-10-13 00:13:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:18,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:13:18,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:18,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252627850] [2021-10-13 00:13:18,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252627850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:18,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445240132] [2021-10-13 00:13:18,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:13:18,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:18,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:18,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:13:18,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:13:18,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:13:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:13:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:13:18,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445240132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:18,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:13:18,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-13 00:13:18,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402108740] [2021-10-13 00:13:18,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:13:18,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:13:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:13:18,693 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-13 00:13:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:18,725 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 00:13:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:13:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) Word has length 13 [2021-10-13 00:13:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:18,726 INFO L225 Difference]: With dead ends: 14 [2021-10-13 00:13:18,727 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:13:18,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:13:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:13:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:13:18,729 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) [2021-10-13 00:13:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:13:18,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-13 00:13:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:18,729 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:13:18,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-13 00:13:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:13:18,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:13:18,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:13:18,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:18,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:18,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:13:18,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:13:18,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:13:18,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:13:18,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:13:19,046 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:13:19,047 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2021-10-13 00:13:19,047 INFO L853 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base)) (.cse1 (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base)) (.cse2 (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse0 .cse1 (<= 4 ~tmp~0.offset) .cse2 (= ULTIMATE.start_glob2_~p~0.offset 0)))) [2021-10-13 00:13:19,047 INFO L857 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2021-10-13 00:13:19,048 INFO L853 garLoopResultBuilder]: At program point L48(lines 38 49) the Hoare annotation is: (or (and (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 4 ~tmp~0.offset) (= ULTIMATE.start_glob2_~p~0.offset 0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:13:19,048 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 00:13:19,048 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base) (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset)) [2021-10-13 00:13:19,048 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:13:19,048 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:13:19,048 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:13:19,049 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-13 00:13:19,049 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 00:13:19,049 INFO L853 garLoopResultBuilder]: At program point L35(lines 25 36) the Hoare annotation is: (or (and (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 4 ~tmp~0.offset) (= ULTIMATE.start_glob2_~p~0.offset 0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:13:19,054 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:13:19,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:13:19 BoogieIcfgContainer [2021-10-13 00:13:19,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:13:19,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:13:19,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:13:19,083 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:13:19,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:16" (3/4) ... [2021-10-13 00:13:19,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:13:19,103 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 00:13:19,104 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 00:13:19,104 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:13:19,104 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:13:19,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:13:19,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:13:19,171 INFO L168 Benchmark]: Toolchain (without parser) took 2967.99 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 66.7 MB in the beginning and 72.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:13:19,172 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:13:19,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.96 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 57.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:13:19,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 55.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:13:19,180 INFO L168 Benchmark]: Boogie Preprocessor took 44.77 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 54.5 MB in the end (delta: 983.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:13:19,182 INFO L168 Benchmark]: RCFGBuilder took 306.25 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 44.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:13:19,183 INFO L168 Benchmark]: TraceAbstraction took 2221.01 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 44.4 MB in the beginning and 75.3 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:13:19,183 INFO L168 Benchmark]: Witness Printer took 85.75 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 72.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:13:19,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.96 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 57.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 55.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.77 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 54.5 MB in the end (delta: 983.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.25 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 44.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2221.01 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 44.4 MB in the beginning and 75.3 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 85.75 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 72.5 MB in the end (delta: 2.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2098.4ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 10.5ms, AutomataDifference: 237.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 97.4ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 37 SDslu, 30 SDs, 0 SdLazy, 46 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 179.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 73 HoareAnnotationTreeSize, 4 FomulaSimplifications, 118 FormulaSimplificationTreeSizeReduction, 27.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 63.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 35.2ms SsaConstructionTime, 171.5ms SatisfiabilityAnalysisTime, 816.0ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 24 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 10/20 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: 29]: Loop Invariant Derived loop invariant: (((tmp == p && pathlim == tmp) && 1 <= cond) && pathlim <= tmp) || ((((tmp == p && pathlim == tmp) && 4 <= tmp) && pathlim <= tmp) && p == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((tmp == p && pathlim == tmp) && 1 <= cond) && pathlim <= tmp - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((pathlim == tmp && 4 <= tmp) && p == 0) || !(0 == cond) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((pathlim == tmp && 4 <= tmp) && p == 0) || !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:13:19,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f45151-74d0-4d19-afe3-59fcc790124e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...