./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be --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 dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:38:39,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:38:39,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:38:39,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:38:39,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:38:39,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:38:39,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:38:39,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:38:39,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:38:39,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:38:39,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:38:39,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:38:39,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:38:39,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:38:39,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:38:39,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:38:39,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:38:39,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:38:39,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:38:39,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:38:39,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:38:39,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:38:39,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:38:39,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:38:39,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:38:39,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:38:39,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:38:39,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:38:39,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:38:39,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:38:39,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:38:39,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:38:39,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:38:39,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:38:39,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:38:39,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:38:39,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:38:39,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:38:39,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:38:39,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:38:39,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:38:39,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:38:39,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:38:39,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:38:39,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:38:39,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:38:39,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:38:39,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:38:39,765 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:38:39,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:38:39,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:38:39,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:38:39,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:38:39,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:38:39,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:38:39,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:38:39,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:38:39,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:38:39,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:38:39,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:38:39,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:38:39,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:38:39,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:38:39,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:38:39,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:38:39,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:38:39,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:38:39,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:38:39,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:38:39,770 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_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c [2021-10-21 19:38:39,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:38:40,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:38:40,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:38:40,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:38:40,039 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:38:40,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2021-10-21 19:38:40,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/data/359dcbe51/b3f6f1e8d3624d75a9349c5dd2032429/FLAG2bf577ca6 [2021-10-21 19:38:40,532 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:38:40,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2021-10-21 19:38:40,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/data/359dcbe51/b3f6f1e8d3624d75a9349c5dd2032429/FLAG2bf577ca6 [2021-10-21 19:38:40,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/data/359dcbe51/b3f6f1e8d3624d75a9349c5dd2032429 [2021-10-21 19:38:40,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:38:40,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:38:40,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:38:40,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:38:40,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:38:40,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:38:40" (1/1) ... [2021-10-21 19:38:40,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ad08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:40, skipping insertion in model container [2021-10-21 19:38:40,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:38:40" (1/1) ... [2021-10-21 19:38:40,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:38:40,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:38:41,088 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_7febcdec-16ab-4664-b88d-1cf151310ed4/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2021-10-21 19:38:41,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:38:41,129 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:38:41,139 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_7febcdec-16ab-4664-b88d-1cf151310ed4/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2021-10-21 19:38:41,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:38:41,156 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:38:41,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41 WrapperNode [2021-10-21 19:38:41,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:38:41,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:38:41,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:38:41,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:38:41,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:38:41,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:38:41,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:38:41,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:38:41,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:38:41,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:38:41,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:38:41,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:38:41,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (1/1) ... [2021-10-21 19:38:41,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:38:41,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:38:41,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:38:41,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:38:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:38:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:38:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:38:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:38:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:38:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:38:41,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:38:41,561 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 19:38:41,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:41 BoogieIcfgContainer [2021-10-21 19:38:41,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:38:41,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:38:41,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:38:41,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:38:41,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:38:40" (1/3) ... [2021-10-21 19:38:41,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118d3722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:38:41, skipping insertion in model container [2021-10-21 19:38:41,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:38:41" (2/3) ... [2021-10-21 19:38:41,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118d3722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:38:41, skipping insertion in model container [2021-10-21 19:38:41,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:41" (3/3) ... [2021-10-21 19:38:41,579 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2021-10-21 19:38:41,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:38:41,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:38:41,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:38:41,636 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=PETRI_NET, 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 [2021-10-21 19:38:41,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:38:41,650 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) [2021-10-21 19:38:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:38:41,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:38:41,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:38:41,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:38:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-10-21 19:38:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:41,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210397348] [2021-10-21 19:38:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:41,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:41,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:41,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210397348] [2021-10-21 19:38:41,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210397348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:41,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:41,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:38:41,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957933121] [2021-10-21 19:38:41,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:38:41,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:38:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:38:41,912 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) [2021-10-21 19:38:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:38:42,007 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-21 19:38:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:38:42,009 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 [2021-10-21 19:38:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:38:42,016 INFO L225 Difference]: With dead ends: 33 [2021-10-21 19:38:42,030 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 19:38:42,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:38:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 19:38:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-10-21 19:38:42,075 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) [2021-10-21 19:38:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-21 19:38:42,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-21 19:38:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:38:42,078 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-21 19:38:42,079 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) [2021-10-21 19:38:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-21 19:38:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:38:42,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:38:42,080 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:38:42,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:38:42,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:38:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2021-10-21 19:38:42,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:42,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539834892] [2021-10-21 19:38:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:42,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:42,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:42,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539834892] [2021-10-21 19:38:42,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539834892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:38:42,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061630180] [2021-10-21 19:38:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:42,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:38:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:38:42,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:38:42,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:38:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:42,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:38:42,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:38:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061630180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:38:42,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:38:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-21 19:38:42,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44485920] [2021-10-21 19:38:42,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:38:42,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:42,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:38:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:38:42,529 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-21 19:38:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:38:42,627 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-21 19:38:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:38:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 [2021-10-21 19:38:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:38:42,629 INFO L225 Difference]: With dead ends: 19 [2021-10-21 19:38:42,630 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:38:42,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:38:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:38:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-10-21 19:38:42,634 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) [2021-10-21 19:38:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-21 19:38:42,635 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-21 19:38:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:38:42,635 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 19:38:42,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-21 19:38:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-21 19:38:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:38:42,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:38:42,637 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:38:42,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:38:42,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-21 19:38:42,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:38:42,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2021-10-21 19:38:42,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:42,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655318948] [2021-10-21 19:38:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:42,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:42,907 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:38:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:38:42,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:38:42,961 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:38:42,962 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:38:42,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:38:42,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:38:43,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:38:43 BoogieIcfgContainer [2021-10-21 19:38:43,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:38:43,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:38:43,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:38:43,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:38:43,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:38:41" (3/4) ... [2021-10-21 19:38:43,007 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:38:43,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:38:43,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:38:43,067 INFO L168 Benchmark]: Toolchain (without parser) took 2132.14 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.0 MB in the beginning and 68.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,067 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 50.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:38:43,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.09 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,069 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:38:43,070 INFO L168 Benchmark]: RCFGBuilder took 349.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 57.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,071 INFO L168 Benchmark]: TraceAbstraction took 1439.03 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 70.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,071 INFO L168 Benchmark]: Witness Printer took 61.03 ms. Allocated memory is still 119.5 MB. Free memory was 70.8 MB in the beginning and 68.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:43,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 50.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.09 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.20 ms. Allocated memory is still 92.3 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.28 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 349.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 57.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1439.03 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 70.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.03 ms. Allocated memory is still 119.5 MB. Free memory was 70.8 MB in the beginning and 68.2 MB in the end (delta: 2.7 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] Char *tmp; VAL [tmp={0:0}] [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L27] Char *p; [L29] p = pathbuf VAL [tmp={3:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={3:4}] [L32] *p = 1 VAL [tmp={3:4}] [L29] p++ VAL [tmp={3:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={3:4}] [L32] *p = 1 VAL [tmp={3:4}] [L29] p++ VAL [tmp={3:4}] [L29] COND TRUE p <= pathlim [L15] COND TRUE !(cond) VAL [tmp={3:4}] [L16] reach_error() VAL [tmp={3:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1341.4ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 9.8ms, AutomataDifference: 253.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 35 SDslu, 26 SDs, 0 SdLazy, 35 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.3ms SsaConstructionTime, 163.9ms SatisfiabilityAnalysisTime, 376.9ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 11 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:38:43,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7febcdec-16ab-4664-b88d-1cf151310ed4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...