./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s12iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw --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 3b77a49aa9e2fe58d44cd30e10a0c2d54049996239a42f9eb129163eea28c3fb ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:22:55,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:22:55,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:22:55,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:22:55,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:22:55,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:22:55,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:22:55,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:22:55,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:22:55,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:22:55,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:22:55,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:22:55,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:22:55,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:22:55,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:22:55,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:22:55,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:22:55,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:22:55,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:22:55,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:22:55,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:22:55,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:22:55,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:22:55,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:22:55,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:22:55,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:22:55,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:22:55,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:22:55,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:22:55,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:22:55,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:22:55,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:22:55,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:22:55,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:22:55,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:22:55,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:22:55,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:22:55,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:22:55,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:22:55,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:22:55,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:22:55,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:22:55,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:22:55,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:22:55,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:22:55,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:22:55,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:22:55,465 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:22:55,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:22:55,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:22:55,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:22:55,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:22:55,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:22:55,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:22:55,468 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:22:55,468 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:22:55,469 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:22:55,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:22:55,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:22:55,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:22:55,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:22:55,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:22:55,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:22:55,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:22:55,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:22:55,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:22:55,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:22:55,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:22:55,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:22:55,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:22:55,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:22:55,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:22:55,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:22:55,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:22:55,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:22:55,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:22:55,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:22:55,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:22:55,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:22:55,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:22:55,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:22:55,479 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_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b77a49aa9e2fe58d44cd30e10a0c2d54049996239a42f9eb129163eea28c3fb [2021-10-20 05:22:55,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:22:55,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:22:55,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:22:55,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:22:55,868 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:22:55,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/array-fpi/s12iff.c [2021-10-20 05:22:55,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/data/a22f518da/1fd4d6e6dbef4d809bbcb7051c7e68f9/FLAG9897856c1 [2021-10-20 05:22:56,518 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:22:56,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/sv-benchmarks/c/array-fpi/s12iff.c [2021-10-20 05:22:56,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/data/a22f518da/1fd4d6e6dbef4d809bbcb7051c7e68f9/FLAG9897856c1 [2021-10-20 05:22:56,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/data/a22f518da/1fd4d6e6dbef4d809bbcb7051c7e68f9 [2021-10-20 05:22:56,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:22:56,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:22:56,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:22:56,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:22:56,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:22:56,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:22:56" (1/1) ... [2021-10-20 05:22:56,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8682e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:56, skipping insertion in model container [2021-10-20 05:22:56,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:22:56" (1/1) ... [2021-10-20 05:22:56,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:22:56,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:22:57,163 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_57abffed-ba71-4fcf-bd67-3f07c28121a3/sv-benchmarks/c/array-fpi/s12iff.c[589,602] [2021-10-20 05:22:57,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:22:57,197 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:22:57,211 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_57abffed-ba71-4fcf-bd67-3f07c28121a3/sv-benchmarks/c/array-fpi/s12iff.c[589,602] [2021-10-20 05:22:57,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:22:57,241 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:22:57,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57 WrapperNode [2021-10-20 05:22:57,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:22:57,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:22:57,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:22:57,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:22:57,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:22:57,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:22:57,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:22:57,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:22:57,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:22:57,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:22:57,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:22:57,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:22:57,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (1/1) ... [2021-10-20 05:22:57,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:22:57,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:22:57,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:22:57,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:22:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:22:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:22:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:22:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:22:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:22:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:22:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:22:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:22:58,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:22:58,022 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-20 05:22:58,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:22:58 BoogieIcfgContainer [2021-10-20 05:22:58,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:22:58,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:22:58,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:22:58,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:22:58,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:22:56" (1/3) ... [2021-10-20 05:22:58,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c26667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:22:58, skipping insertion in model container [2021-10-20 05:22:58,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:22:57" (2/3) ... [2021-10-20 05:22:58,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c26667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:22:58, skipping insertion in model container [2021-10-20 05:22:58,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:22:58" (3/3) ... [2021-10-20 05:22:58,037 INFO L111 eAbstractionObserver]: Analyzing ICFG s12iff.c [2021-10-20 05:22:58,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:22:58,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:22:58,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:22:58,118 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 [2021-10-20 05:22:58,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:22:58,138 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) [2021-10-20 05:22:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:22:58,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:22:58,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:22:58,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:22:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:22:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1162179950, now seen corresponding path program 1 times [2021-10-20 05:22:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:22:58,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558915079] [2021-10-20 05:22:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:22:58,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:22:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:22:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:22:58,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:22:58,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558915079] [2021-10-20 05:22:58,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558915079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:22:58,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:22:58,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:22:58,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980851517] [2021-10-20 05:22:58,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:22:58,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:22:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:22:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:22:58,463 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) [2021-10-20 05:22:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:22:58,527 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-20 05:22:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:22:58,529 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 [2021-10-20 05:22:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:22:58,538 INFO L225 Difference]: With dead ends: 20 [2021-10-20 05:22:58,538 INFO L226 Difference]: Without dead ends: 9 [2021-10-20 05:22:58,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:22:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-20 05:22:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-20 05:22:58,608 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) [2021-10-20 05:22:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-20 05:22:58,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-10-20 05:22:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:22:58,610 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-20 05:22:58,611 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) [2021-10-20 05:22:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-20 05:22:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:22:58,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:22:58,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:22:58,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:22:58,613 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:22:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:22:58,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1871859412, now seen corresponding path program 1 times [2021-10-20 05:22:58,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:22:58,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024849065] [2021-10-20 05:22:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:22:58,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:22:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:22:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 05:22:58,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:22:58,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024849065] [2021-10-20 05:22:58,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024849065] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:22:58,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:22:58,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:22:58,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447927797] [2021-10-20 05:22:58,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:22:58,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:22:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:22:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:22:58,688 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) [2021-10-20 05:22:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:22:58,724 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-10-20 05:22:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:22:58,725 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 [2021-10-20 05:22:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:22:58,726 INFO L225 Difference]: With dead ends: 15 [2021-10-20 05:22:58,726 INFO L226 Difference]: Without dead ends: 11 [2021-10-20 05:22:58,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:22:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-20 05:22:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-20 05:22:58,730 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) [2021-10-20 05:22:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-20 05:22:58,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-20 05:22:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:22:58,732 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-20 05:22:58,732 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) [2021-10-20 05:22:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-20 05:22:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:22:58,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:22:58,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:22:58,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:22:58,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:22:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:22:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash 908788323, now seen corresponding path program 1 times [2021-10-20 05:22:58,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:22:58,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891033615] [2021-10-20 05:22:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:22:58,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:22:58,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:22:58,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018846256] [2021-10-20 05:22:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:22:58,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:22:58,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:22:58,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:22:58,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:22:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:22:58,875 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:22:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:22:58,961 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:22:58,961 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:22:58,963 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:22:59,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:22:59,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:22:59,200 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:22:59,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:22:59 BoogieIcfgContainer [2021-10-20 05:22:59,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:22:59,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:22:59,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:22:59,230 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:22:59,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:22:58" (3/4) ... [2021-10-20 05:22:59,232 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:22:59,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57abffed-ba71-4fcf-bd67-3f07c28121a3/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:22:59,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:22:59,280 INFO L168 Benchmark]: Toolchain (without parser) took 2368.67 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 49.3 MB in the beginning and 53.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,280 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:22:59,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.02 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 49.1 MB in the beginning and 83.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 82.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,282 INFO L168 Benchmark]: Boogie Preprocessor took 34.23 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 80.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,283 INFO L168 Benchmark]: RCFGBuilder took 699.06 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 64.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,284 INFO L168 Benchmark]: TraceAbstraction took 1201.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 56.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,285 INFO L168 Benchmark]: Witness Printer took 48.20 ms. Allocated memory is still 113.2 MB. Free memory was 56.5 MB in the beginning and 53.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:22:59,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.02 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 49.1 MB in the beginning and 83.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 82.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.23 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 80.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.06 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 64.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1201.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 56.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Witness Printer took 48.20 ms. Allocated memory is still 113.2 MB. Free memory was 56.5 MB in the beginning and 53.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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