./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s42iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s42iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cab9485b959e77d6deff86bc73b506eef564dcbe6dfef5f5d40fbaefa7c4e678 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:45,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:45,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:45,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:45,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:45,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:45,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:45,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:45,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:45,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:45,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:45,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:45,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:45,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:45,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:45,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:45,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:45,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:45,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:45,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:45,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:45,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:45,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:45,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:45,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:45,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:45,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:45,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:45,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:45,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:45,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:45,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:45,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:45,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:45,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:45,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:45,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:45,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:45,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:45,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:45,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:45,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:53:45,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:45,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:45,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:45,578 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:45,578 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:45,578 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:45,578 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:45,579 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:45,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:45,579 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:45,580 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:45,581 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:45,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:45,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:45,581 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:45,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:45,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:45,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:45,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:45,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:45,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:45,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:45,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:45,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:45,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:45,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:45,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:45,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:45,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:45,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:45,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:45,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:45,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:45,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:45,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:45,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:45,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:45,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:45,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:45,590 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_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab9485b959e77d6deff86bc73b506eef564dcbe6dfef5f5d40fbaefa7c4e678 [2021-11-07 00:53:45,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:45,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:45,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:45,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:45,927 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:45,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-fpi/s42iff.c [2021-11-07 00:53:46,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/data/e27f5ebd5/cd1aa9b53d5d4113b299787a267eec1c/FLAG3571422fb [2021-11-07 00:53:46,551 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:46,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/sv-benchmarks/c/array-fpi/s42iff.c [2021-11-07 00:53:46,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/data/e27f5ebd5/cd1aa9b53d5d4113b299787a267eec1c/FLAG3571422fb [2021-11-07 00:53:46,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/data/e27f5ebd5/cd1aa9b53d5d4113b299787a267eec1c [2021-11-07 00:53:46,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:46,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:46,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:46,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:46,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:46,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:46" (1/1) ... [2021-11-07 00:53:46,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22953e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:46, skipping insertion in model container [2021-11-07 00:53:46,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:46" (1/1) ... [2021-11-07 00:53:46,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:46,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:47,140 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/sv-benchmarks/c/array-fpi/s42iff.c[589,602] [2021-11-07 00:53:47,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:47,179 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:47,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/sv-benchmarks/c/array-fpi/s42iff.c[589,602] [2021-11-07 00:53:47,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:47,254 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:47,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47 WrapperNode [2021-11-07 00:53:47,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:47,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:47,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:47,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:47,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:47,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:47,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:47,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:47,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:47,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:47,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:47,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:47,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (1/1) ... [2021-11-07 00:53:47,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:47,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:47,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:53:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 00:53:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 00:53:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:47,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:47,905 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 00:53:47,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:47 BoogieIcfgContainer [2021-11-07 00:53:47,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:47,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:47,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:47,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:47,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:46" (1/3) ... [2021-11-07 00:53:47,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8c8ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:47, skipping insertion in model container [2021-11-07 00:53:47,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:47" (2/3) ... [2021-11-07 00:53:47,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8c8ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:47, skipping insertion in model container [2021-11-07 00:53:47,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:47" (3/3) ... [2021-11-07 00:53:47,918 INFO L111 eAbstractionObserver]: Analyzing ICFG s42iff.c [2021-11-07 00:53:47,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:47,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:53:47,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:47,984 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:53:47,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:53:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 00:53:48,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:48,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:48,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1162179950, now seen corresponding path program 1 times [2021-11-07 00:53:48,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:48,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717365480] [2021-11-07 00:53:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:48,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:48,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717365480] [2021-11-07 00:53:48,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717365480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:48,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:48,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:53:48,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643261770] [2021-11-07 00:53:48,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:48,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:48,269 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:48,338 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-11-07 00:53:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-11-07 00:53:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:48,351 INFO L225 Difference]: With dead ends: 20 [2021-11-07 00:53:48,351 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 00:53:48,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 00:53:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 00:53:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-11-07 00:53:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-07 00:53:48,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-11-07 00:53:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:48,392 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-07 00:53:48,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-07 00:53:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:53:48,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:48,394 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:48,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:53:48,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1871859412, now seen corresponding path program 1 times [2021-11-07 00:53:48,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:48,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440626238] [2021-11-07 00:53:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:53:48,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:48,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440626238] [2021-11-07 00:53:48,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440626238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:48,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:48,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:53:48,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442771665] [2021-11-07 00:53:48,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:48,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:48,535 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:48,584 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-07 00:53:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-07 00:53:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:48,586 INFO L225 Difference]: With dead ends: 15 [2021-11-07 00:53:48,587 INFO L226 Difference]: Without dead ends: 11 [2021-11-07 00:53:48,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-07 00:53:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 00:53:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-07 00:53:48,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-07 00:53:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:48,598 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-07 00:53:48,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-07 00:53:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 00:53:48,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:48,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:48,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 00:53:48,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:48,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 908788323, now seen corresponding path program 1 times [2021-11-07 00:53:48,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:48,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384354840] [2021-11-07 00:53:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:48,687 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:53:48,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446854701] [2021-11-07 00:53:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:48,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:48,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:53:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:48,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:53:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:48,893 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:53:48,893 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:53:48,894 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:48,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:49,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:49,113 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 00:53:49,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:53:49,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:49 BoogieIcfgContainer [2021-11-07 00:53:49,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:53:49,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:53:49,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:53:49,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:53:49,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:47" (3/4) ... [2021-11-07 00:53:49,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 00:53:49,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03de9d2-43c9-4e3b-bf2a-96358b2abf2b/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 00:53:49,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:53:49,248 INFO L168 Benchmark]: Toolchain (without parser) took 2333.02 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 69.4 MB in the beginning and 100.2 MB in the end (delta: -30.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:49,248 INFO L168 Benchmark]: CDTParser took 5.13 ms. Allocated memory is still 109.1 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:49,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 83.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:49,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:49,250 INFO L168 Benchmark]: Boogie Preprocessor took 55.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 80.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:49,250 INFO L168 Benchmark]: RCFGBuilder took 549.10 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 64.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:49,251 INFO L168 Benchmark]: TraceAbstraction took 1241.02 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 64.1 MB in the beginning and 102.3 MB in the end (delta: -38.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:49,252 INFO L168 Benchmark]: Witness Printer took 87.84 ms. Allocated memory is still 134.2 MB. Free memory was 102.3 MB in the beginning and 100.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:49,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.13 ms. Allocated memory is still 109.1 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 83.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 80.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.10 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 64.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1241.02 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 64.1 MB in the beginning and 102.3 MB in the end (delta: -38.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.84 ms. Allocated memory is still 134.2 MB. Free memory was 102.3 MB in the beginning and 100.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i