./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/res2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 219ff25dcfb107eec264b890e617d01b4ab0eae8d593ab3965da9d4eaab5cf5a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:31:43,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:31:43,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:31:43,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:31:43,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:31:43,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:31:43,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:31:43,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:31:43,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:31:43,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:31:43,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:31:43,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:31:43,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:31:43,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:31:43,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:31:43,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:31:43,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:31:43,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:31:43,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:31:43,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:31:43,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:31:43,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:31:43,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:31:43,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:31:43,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:31:43,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:31:43,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:31:43,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:31:43,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:31:43,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:31:43,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:31:43,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:31:43,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:31:43,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:31:43,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:31:43,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:31:43,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:31:43,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:31:43,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:31:43,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:31:43,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:31:43,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:31:43,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:31:43,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:31:43,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:31:43,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:31:43,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:31:43,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:31:43,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:31:43,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:31:43,566 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:31:43,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:31:43,568 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:31:43,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:31:43,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:31:43,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:31:43,569 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:31:43,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:31:43,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:31:43,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:31:43,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:31:43,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:31:43,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:31:43,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:31:43,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:31:43,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:31:43,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:31:43,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:31:43,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:31:43,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:31:43,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:31:43,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:31:43,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:31:43,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:31:43,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:31:43,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:31:43,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:31:43,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:31:43,579 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:31:43,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:31:43,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:31:43,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:31:43,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:31:43,580 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 219ff25dcfb107eec264b890e617d01b4ab0eae8d593ab3965da9d4eaab5cf5a [2021-11-23 17:31:43,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:31:43,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:31:43,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:31:43,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:31:43,999 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:31:44,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-fpi/res2f.c [2021-11-23 17:31:44,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/2365b20c5/d55225550b824132ac5ebe6d9bd468f9/FLAG130dd7488 [2021-11-23 17:31:44,643 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:31:44,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c [2021-11-23 17:31:44,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/2365b20c5/d55225550b824132ac5ebe6d9bd468f9/FLAG130dd7488 [2021-11-23 17:31:44,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/2365b20c5/d55225550b824132ac5ebe6d9bd468f9 [2021-11-23 17:31:45,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:31:45,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:31:45,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:31:45,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:31:45,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:31:45,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1c056f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45, skipping insertion in model container [2021-11-23 17:31:45,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:31:45,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:31:45,264 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_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-11-23 17:31:45,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:31:45,302 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:31:45,318 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_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-11-23 17:31:45,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:31:45,348 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:31:45,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45 WrapperNode [2021-11-23 17:31:45,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:31:45,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:31:45,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:31:45,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:31:45,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,409 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2021-11-23 17:31:45,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:31:45,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:31:45,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:31:45,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:31:45,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:31:45,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:31:45,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:31:45,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:31:45,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:45" (1/1) ... [2021-11-23 17:31:45,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:31:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:31:45,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:31:45,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:31:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:31:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:31:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:31:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:31:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:31:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:31:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:31:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:31:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:31:45,702 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:31:45,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:31:45,932 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:31:45,987 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:31:45,993 INFO L158 Benchmark]: Toolchain (without parser) took 987.62ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 83.0MB in the end (delta: 6.5MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 17:31:46,002 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:46,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.70ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 99.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:31:46,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.96ms. Allocated memory is still 123.7MB. Free memory was 99.2MB in the beginning and 97.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:31:46,006 INFO L158 Benchmark]: Boogie Preprocessor took 43.48ms. Allocated memory is still 123.7MB. Free memory was 97.7MB in the beginning and 96.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:46,008 INFO L158 Benchmark]: RCFGBuilder took 528.39ms. Allocated memory is still 123.7MB. Free memory was 96.5MB in the beginning and 83.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:31:46,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.70ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 99.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.96ms. Allocated memory is still 123.7MB. Free memory was 99.2MB in the beginning and 97.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.48ms. Allocated memory is still 123.7MB. Free memory was 97.7MB in the beginning and 96.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 528.39ms. Allocated memory is still 123.7MB. Free memory was 96.5MB in the beginning and 83.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:31:46,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/res2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 219ff25dcfb107eec264b890e617d01b4ab0eae8d593ab3965da9d4eaab5cf5a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:31:48,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:31:48,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:31:48,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:31:48,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:31:48,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:31:48,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:31:48,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:31:48,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:31:49,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:31:49,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:31:49,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:31:49,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:31:49,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:31:49,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:31:49,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:31:49,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:31:49,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:31:49,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:31:49,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:31:49,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:31:49,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:31:49,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:31:49,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:31:49,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:31:49,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:31:49,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:31:49,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:31:49,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:31:49,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:31:49,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:31:49,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:31:49,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:31:49,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:31:49,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:31:49,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:31:49,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:31:49,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:31:49,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:31:49,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:31:49,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:31:49,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:31:49,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:31:49,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:31:49,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:31:49,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:31:49,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:31:49,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:31:49,142 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:31:49,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:31:49,142 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:31:49,142 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:31:49,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:31:49,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:31:49,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:31:49,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:31:49,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:31:49,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:31:49,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:31:49,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:31:49,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:31:49,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:31:49,147 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:31:49,147 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:31:49,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:31:49,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:31:49,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:31:49,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:31:49,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:31:49,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:31:49,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:31:49,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:31:49,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:31:49,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:31:49,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:31:49,150 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:31:49,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:31:49,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:31:49,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:31:49,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:31:49,187 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 219ff25dcfb107eec264b890e617d01b4ab0eae8d593ab3965da9d4eaab5cf5a [2021-11-23 17:31:49,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:31:49,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:31:49,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:31:49,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:31:49,633 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:31:49,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-fpi/res2f.c [2021-11-23 17:31:49,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/825932609/009ac12abf3b4f2884eac2d96a0748f7/FLAG5c31bfdcc [2021-11-23 17:31:50,363 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:31:50,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c [2021-11-23 17:31:50,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/825932609/009ac12abf3b4f2884eac2d96a0748f7/FLAG5c31bfdcc [2021-11-23 17:31:50,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/data/825932609/009ac12abf3b4f2884eac2d96a0748f7 [2021-11-23 17:31:50,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:31:50,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:31:50,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:31:50,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:31:50,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:31:50,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:31:50" (1/1) ... [2021-11-23 17:31:50,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f6ab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:50, skipping insertion in model container [2021-11-23 17:31:50,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:31:50" (1/1) ... [2021-11-23 17:31:50,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:31:50,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:31:50,879 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_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-11-23 17:31:50,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:31:50,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:31:50,950 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_9bec4807-c31b-4ba8-b680-6ea8da9e3506/sv-benchmarks/c/array-fpi/res2f.c[588,601] [2021-11-23 17:31:50,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:31:51,000 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:31:51,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51 WrapperNode [2021-11-23 17:31:51,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:31:51,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:31:51,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:31:51,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:31:51,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,067 INFO L137 Inliner]: procedures = 21, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2021-11-23 17:31:51,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:31:51,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:31:51,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:31:51,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:31:51,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:31:51,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:31:51,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:31:51,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:31:51,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (1/1) ... [2021-11-23 17:31:51,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:31:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:31:51,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:31:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:31:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:31:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:31:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:31:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 17:31:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:31:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:31:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:31:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:31:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 17:31:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:31:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:31:51,337 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:31:51,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:31:51,719 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:31:51,726 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:31:51,727 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 17:31:51,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:31:51 BoogieIcfgContainer [2021-11-23 17:31:51,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:31:51,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:31:51,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:31:51,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:31:51,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:31:50" (1/3) ... [2021-11-23 17:31:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d9202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:31:51, skipping insertion in model container [2021-11-23 17:31:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:31:51" (2/3) ... [2021-11-23 17:31:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d9202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:31:51, skipping insertion in model container [2021-11-23 17:31:51,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:31:51" (3/3) ... [2021-11-23 17:31:51,774 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-11-23 17:31:51,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:31:51,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:31:51,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:31:51,850 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:31:51,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:31:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-11-23 17:31:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 17:31:51,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:31:51,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:31:51,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:31:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:31:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2021-11-23 17:31:51,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:31:51,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895617661] [2021-11-23 17:31:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:31:51,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:31:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:31:51,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:31:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:31:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:31:52,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:31:52,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:31:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:31:52,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:31:52,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:31:52,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895617661] [2021-11-23 17:31:52,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895617661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:31:52,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:31:52,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:31:52,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017642146] [2021-11-23 17:31:52,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:31:52,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:31:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:31:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:31:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:31:52,186 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-11-23 17:31:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:31:52,208 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2021-11-23 17:31:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:31:52,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 17:31:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:31:52,221 INFO L225 Difference]: With dead ends: 56 [2021-11-23 17:31:52,221 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 17:31:52,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:31:52,231 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:31:52,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:31:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 17:31:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 17:31:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2021-11-23 17:31:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-23 17:31:52,275 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2021-11-23 17:31:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:31:52,276 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-23 17:31:52,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-11-23 17:31:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-23 17:31:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 17:31:52,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:31:52,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:31:52,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:31:52,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:31:52,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:31:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:31:52,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2021-11-23 17:31:52,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:31:52,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075452777] [2021-11-23 17:31:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:31:52,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:31:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:31:52,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:31:52,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:31:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:31:52,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 17:31:52,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:31:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:31:52,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:31:52,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:31:52,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075452777] [2021-11-23 17:31:52,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075452777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:31:52,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:31:52,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:31:52,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038298684] [2021-11-23 17:31:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:31:52,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:31:52,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:31:52,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:31:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:31:52,927 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-23 17:31:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:31:53,251 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-11-23 17:31:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:31:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 17:31:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:31:53,254 INFO L225 Difference]: With dead ends: 57 [2021-11-23 17:31:53,254 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 17:31:53,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:31:53,256 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:31:53,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 17:31:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 17:31:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-11-23 17:31:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-11-23 17:31:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-23 17:31:53,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2021-11-23 17:31:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:31:53,272 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-23 17:31:53,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-23 17:31:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-23 17:31:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 17:31:53,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:31:53,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:31:53,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:31:53,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:31:53,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:31:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:31:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2021-11-23 17:31:53,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:31:53,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927797597] [2021-11-23 17:31:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:31:53,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:31:53,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:31:53,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:31:53,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:31:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:31:53,749 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 17:31:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:31:53,939 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 17:31:53,939 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 17:31:53,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 17:31:53,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:31:54,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:31:54,148 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 17:31:54,152 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:31:54,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:31:54 BoogieIcfgContainer [2021-11-23 17:31:54,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:31:54,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:31:54,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:31:54,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:31:54,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:31:51" (3/4) ... [2021-11-23 17:31:54,244 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 17:31:54,365 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bec4807-c31b-4ba8-b680-6ea8da9e3506/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:31:54,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:31:54,374 INFO L158 Benchmark]: Toolchain (without parser) took 3676.96ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 43.0MB in the beginning and 48.5MB in the end (delta: -5.5MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,374 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:54,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.22ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 45.7MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.76ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 43.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:31:54,377 INFO L158 Benchmark]: Boogie Preprocessor took 47.18ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 42.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,377 INFO L158 Benchmark]: RCFGBuilder took 612.82ms. Allocated memory is still 62.9MB. Free memory was 42.3MB in the beginning and 29.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,378 INFO L158 Benchmark]: TraceAbstraction took 2509.16ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 28.9MB in the beginning and 52.1MB in the end (delta: -23.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,379 INFO L158 Benchmark]: Witness Printer took 131.98ms. Allocated memory is still 92.3MB. Free memory was 52.1MB in the beginning and 48.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:31:54,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.22ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 45.7MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.76ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 43.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.18ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 42.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.82ms. Allocated memory is still 62.9MB. Free memory was 42.3MB in the beginning and 29.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2509.16ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 28.9MB in the beginning and 52.1MB in the end (delta: -23.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 131.98ms. Allocated memory is still 92.3MB. Free memory was 52.1MB in the beginning and 48.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 VAL [a={5:0}, b={-2147483646:0}, c={6:0}, i=0, N=1, sum={-2147483637:0}] [L34] COND TRUE i