./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum_array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF --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 f0ce6e358e97991ebbe821b374467d4ac3ee0da45122333d4b5212eb8135ac7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:32:18,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:32:18,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:32:18,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:32:18,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:32:18,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:32:18,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:32:18,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:32:18,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:32:18,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:32:18,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:32:18,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:32:18,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:32:18,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:32:18,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:32:18,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:32:18,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:32:18,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:32:18,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:32:18,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:32:18,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:32:18,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:32:18,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:32:18,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:32:18,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:32:18,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:32:18,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:32:18,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:32:18,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:32:18,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:32:18,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:32:18,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:32:18,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:32:18,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:32:18,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:32:18,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:32:18,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:32:18,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:32:18,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:32:18,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:32:18,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:32:18,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:32:18,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:32:18,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:32:18,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:32:18,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:32:18,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:32:18,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:32:18,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:32:18,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:32:18,937 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:32:18,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:32:18,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:32:18,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:32:18,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:32:18,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:32:18,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:32:18,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:32:18,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:32:18,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:32:18,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:32:18,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:32:18,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:32:18,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:32:18,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:32:18,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:32:18,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:18,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:32:18,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:32:18,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:32:18,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:32:18,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:32:18,944 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:32:18,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:32:18,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:32:18,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:32:18,945 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_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0ce6e358e97991ebbe821b374467d4ac3ee0da45122333d4b5212eb8135ac7d [2021-11-20 05:32:19,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:32:19,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:32:19,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:32:19,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:32:19,293 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:32:19,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loops/sum_array-1.c [2021-11-20 05:32:19,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/data/620da59d6/0de45d065ddb4b43b2fe84832b198ebb/FLAG4e52b0adb [2021-11-20 05:32:19,887 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:32:19,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/sv-benchmarks/c/loops/sum_array-1.c [2021-11-20 05:32:19,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/data/620da59d6/0de45d065ddb4b43b2fe84832b198ebb/FLAG4e52b0adb [2021-11-20 05:32:20,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/data/620da59d6/0de45d065ddb4b43b2fe84832b198ebb [2021-11-20 05:32:20,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:32:20,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:32:20,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:20,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:32:20,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:32:20,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f4fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20, skipping insertion in model container [2021-11-20 05:32:20,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:32:20,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:20,478 WARN L230 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_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-11-20 05:32:20,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:20,513 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:32:20,530 WARN L230 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_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-11-20 05:32:20,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:20,574 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:32:20,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20 WrapperNode [2021-11-20 05:32:20,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:20,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:20,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:32:20,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:32:20,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,616 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2021-11-20 05:32:20,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:20,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:32:20,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:32:20,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:32:20,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:32:20,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:32:20,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:32:20,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:32:20,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:20,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:20,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:20,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:20,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:32:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:32:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:32:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:32:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:32:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:32:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:32:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:32:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:32:20,802 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:32:20,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:32:21,012 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:32:21,018 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:32:21,019 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 05:32:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:21 BoogieIcfgContainer [2021-11-20 05:32:21,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:32:21,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:32:21,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:32:21,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:32:21,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:32:20" (1/3) ... [2021-11-20 05:32:21,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380cb9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:21, skipping insertion in model container [2021-11-20 05:32:21,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (2/3) ... [2021-11-20 05:32:21,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380cb9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:21, skipping insertion in model container [2021-11-20 05:32:21,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:21" (3/3) ... [2021-11-20 05:32:21,032 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-11-20 05:32:21,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:32:21,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:32:21,103 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:32:21,114 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 [2021-11-20 05:32:21,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:32:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:32:21,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:21,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:21,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2021-11-20 05:32:21,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:21,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641385804] [2021-11-20 05:32:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:21,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:21,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641385804] [2021-11-20 05:32:21,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641385804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:21,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:21,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:21,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298237001] [2021-11-20 05:32:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:21,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:21,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:21,587 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:21,765 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2021-11-20 05:32:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-20 05:32:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:21,777 INFO L225 Difference]: With dead ends: 60 [2021-11-20 05:32:21,778 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 05:32:21,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:21,791 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:21,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 31 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 05:32:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-11-20 05:32:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-20 05:32:21,824 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-11-20 05:32:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:21,825 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-20 05:32:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-20 05:32:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:32:21,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:21,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:21,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:32:21,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2021-11-20 05:32:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649586944] [2021-11-20 05:32:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:21,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:21,905 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:22,030 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:22,031 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:32:22,033 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:32:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:32:22,039 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 05:32:22,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:32:22,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:32:22 BoogieIcfgContainer [2021-11-20 05:32:22,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:32:22,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:32:22,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:32:22,103 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:32:22,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:21" (3/4) ... [2021-11-20 05:32:22,105 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 05:32:22,169 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70ee8-b7c8-4fcb-8364-f1775f813a28/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:32:22,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:32:22,175 INFO L158 Benchmark]: Toolchain (without parser) took 1910.49ms. Allocated memory was 102.8MB in the beginning and 153.1MB in the end (delta: 50.3MB). Free memory was 69.8MB in the beginning and 73.2MB in the end (delta: -3.3MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,175 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:32:22,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.04ms. Allocated memory was 102.8MB in the beginning and 153.1MB in the end (delta: 50.3MB). Free memory was 69.6MB in the beginning and 128.5MB in the end (delta: -58.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.59ms. Allocated memory is still 153.1MB. Free memory was 128.5MB in the beginning and 126.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,176 INFO L158 Benchmark]: Boogie Preprocessor took 29.44ms. Allocated memory is still 153.1MB. Free memory was 126.9MB in the beginning and 125.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,177 INFO L158 Benchmark]: RCFGBuilder took 372.56ms. Allocated memory is still 153.1MB. Free memory was 125.6MB in the beginning and 113.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,177 INFO L158 Benchmark]: TraceAbstraction took 1077.05ms. Allocated memory is still 153.1MB. Free memory was 113.0MB in the beginning and 75.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,178 INFO L158 Benchmark]: Witness Printer took 71.72ms. Allocated memory is still 153.1MB. Free memory was 75.3MB in the beginning and 73.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:22,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.04ms. Allocated memory was 102.8MB in the beginning and 153.1MB in the end (delta: 50.3MB). Free memory was 69.6MB in the beginning and 128.5MB in the end (delta: -58.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.59ms. Allocated memory is still 153.1MB. Free memory was 128.5MB in the beginning and 126.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.44ms. Allocated memory is still 153.1MB. Free memory was 126.9MB in the beginning and 125.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 372.56ms. Allocated memory is still 153.1MB. Free memory was 125.6MB in the beginning and 113.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1077.05ms. Allocated memory is still 153.1MB. Free memory was 113.0MB in the beginning and 75.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 71.72ms. Allocated memory is still 153.1MB. Free memory was 75.3MB in the beginning and 73.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 VAL [A={6:0}, B={5:0}, C={7:0}, i=0, M=1] [L20] COND TRUE i