./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ss3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG --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 76ae16499864b13b3948e2270be5b31e7a14f523ef5d86d5f7c4d24360e8b13e ............................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 05:48:47,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:48:47,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:48:47,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:48:47,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:48:47,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:48:47,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:48:47,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:48:47,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:48:47,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:48:47,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:48:47,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:48:47,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:48:47,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:48:47,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:48:47,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:48:47,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:48:47,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:48:47,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:48:47,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:48:47,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:48:47,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:48:47,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:48:47,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:48:47,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:48:47,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:48:47,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:48:47,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:48:47,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:48:47,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:48:47,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:48:47,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:48:47,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:48:47,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:48:47,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:48:47,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:48:47,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:48:47,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:48:47,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:48:47,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:48:47,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:48:47,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:48:47,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:48:47,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:48:47,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:48:47,550 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:48:47,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:48:47,551 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:48:47,551 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:48:47,551 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:48:47,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:48:47,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:48:47,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:48:47,553 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:48:47,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:48:47,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:48:47,554 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:48:47,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:48:47,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:48:47,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:48:47,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:48:47,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:48:47,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:48:47,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:48:47,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:48:47,557 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:48:47,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:48:47,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:48:47,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:48:47,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:48:47,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:48:47,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:48:47,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:48:47,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:48:47,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:48:47,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:48:47,560 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:48:47,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:48:47,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:48:47,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:48:47,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:48:47,561 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_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76ae16499864b13b3948e2270be5b31e7a14f523ef5d86d5f7c4d24360e8b13e [2021-10-29 05:48:47,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:48:47,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:48:47,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:48:47,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:48:48,000 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:48:48,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/array-fpi/ss3f.c [2021-10-29 05:48:48,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/data/3768a0180/8f5e5cfd0cea410582c9275cd81e94d5/FLAG061c0290e [2021-10-29 05:48:48,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:48:48,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/sv-benchmarks/c/array-fpi/ss3f.c [2021-10-29 05:48:48,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/data/3768a0180/8f5e5cfd0cea410582c9275cd81e94d5/FLAG061c0290e [2021-10-29 05:48:48,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/data/3768a0180/8f5e5cfd0cea410582c9275cd81e94d5 [2021-10-29 05:48:48,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:48:48,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:48:49,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:48:49,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:48:49,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:48:49,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:48:48" (1/1) ... [2021-10-29 05:48:49,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4a592d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49, skipping insertion in model container [2021-10-29 05:48:49,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:48:48" (1/1) ... [2021-10-29 05:48:49,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:48:49,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:48:49,252 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_6fd4ea5a-199e-44f9-abed-7dce7af9212e/sv-benchmarks/c/array-fpi/ss3f.c[587,600] [2021-10-29 05:48:49,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:48:49,293 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:48:49,308 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_6fd4ea5a-199e-44f9-abed-7dce7af9212e/sv-benchmarks/c/array-fpi/ss3f.c[587,600] [2021-10-29 05:48:49,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:48:49,339 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:48:49,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49 WrapperNode [2021-10-29 05:48:49,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:48:49,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:48:49,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:48:49,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:48:49,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:48:49,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:48:49,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:48:49,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:48:49,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:48:49,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:48:49,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:48:49,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:48:49,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (1/1) ... [2021-10-29 05:48:49,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:48:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:48:49,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:48:49,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:48:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:48:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:48:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:48:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:48:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:48:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:48:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:48:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:48:50,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:48:50,042 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 05:48:50,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:50 BoogieIcfgContainer [2021-10-29 05:48:50,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:48:50,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:48:50,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:48:50,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:48:50,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:48:48" (1/3) ... [2021-10-29 05:48:50,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a927915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:48:50, skipping insertion in model container [2021-10-29 05:48:50,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:48:49" (2/3) ... [2021-10-29 05:48:50,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a927915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:48:50, skipping insertion in model container [2021-10-29 05:48:50,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:50" (3/3) ... [2021-10-29 05:48:50,062 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2021-10-29 05:48:50,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:48:50,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:48:50,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:48:50,183 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 [2021-10-29 05:48:50,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:48:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:48:50,213 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:50,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:50,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:48:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1473858574, now seen corresponding path program 1 times [2021-10-29 05:48:50,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:50,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052841003] [2021-10-29 05:48:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:50,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:48:50,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:50,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052841003] [2021-10-29 05:48:50,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052841003] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:50,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:50,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:48:50,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431375854] [2021-10-29 05:48:50,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:48:50,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:48:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:48:50,628 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:48:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:50,719 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2021-10-29 05:48:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:48:50,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:48:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:50,734 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:48:50,734 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:48:50,739 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 [2021-10-29 05:48:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:48:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:48:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) 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) [2021-10-29 05:48:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-29 05:48:50,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2021-10-29 05:48:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:50,795 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-29 05:48:50,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:48:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-29 05:48:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:48:50,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:50,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:50,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:48:50,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:48:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -332908202, now seen corresponding path program 1 times [2021-10-29 05:48:50,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:50,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574758648] [2021-10-29 05:48:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:50,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:48:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:48:50,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:48:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574758648] [2021-10-29 05:48:50,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574758648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:48:50,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:48:50,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:48:50,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244482968] [2021-10-29 05:48:50,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:48:50,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:48:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:48:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:48:50,914 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:48:51,017 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2021-10-29 05:48:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:48:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:48:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:48:51,021 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:48:51,022 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:48:51,023 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 [2021-10-29 05:48:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:48:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:48:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-29 05:48:51,036 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2021-10-29 05:48:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:48:51,037 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-29 05:48:51,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:48:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-29 05:48:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:48:51,039 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:48:51,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:48:51,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:48:51,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:48:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:48:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash 852146504, now seen corresponding path program 1 times [2021-10-29 05:48:51,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:48:51,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997905470] [2021-10-29 05:48:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:51,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:48:51,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:48:51,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787600290] [2021-10-29 05:48:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:48:51,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:48:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:48:51,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:48:51,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:48:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:48:51,225 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:48:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:48:51,317 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:48:51,318 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:48:51,319 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:48:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:48:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:48:51,552 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:48:51,555 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:48:51,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:48:51 BoogieIcfgContainer [2021-10-29 05:48:51,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:48:51,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:48:51,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:48:51,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:48:51,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:48:50" (3/4) ... [2021-10-29 05:48:51,605 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:48:51,670 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fd4ea5a-199e-44f9-abed-7dce7af9212e/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:48:51,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:48:51,672 INFO L168 Benchmark]: Toolchain (without parser) took 2672.46 ms. Allocated memory was 136.3 MB in the beginning and 165.7 MB in the end (delta: 29.4 MB). Free memory was 100.4 MB in the beginning and 132.0 MB in the end (delta: -31.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:51,673 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 136.3 MB. Free memory was 109.7 MB in the beginning and 109.6 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:51,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.06 ms. Allocated memory is still 136.3 MB. Free memory was 100.1 MB in the beginning and 109.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:51,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.42 ms. Allocated memory is still 136.3 MB. Free memory was 108.7 MB in the beginning and 107.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:51,676 INFO L168 Benchmark]: Boogie Preprocessor took 37.83 ms. Allocated memory is still 136.3 MB. Free memory was 107.0 MB in the beginning and 105.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:51,677 INFO L168 Benchmark]: RCFGBuilder took 601.67 ms. Allocated memory is still 136.3 MB. Free memory was 105.9 MB in the beginning and 89.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:51,678 INFO L168 Benchmark]: TraceAbstraction took 1548.20 ms. Allocated memory was 136.3 MB in the beginning and 165.7 MB in the end (delta: 29.4 MB). Free memory was 89.4 MB in the beginning and 134.1 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:48:51,679 INFO L168 Benchmark]: Witness Printer took 72.85 ms. Allocated memory is still 165.7 MB. Free memory was 134.1 MB in the beginning and 132.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:48:51,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 136.3 MB. Free memory was 109.7 MB in the beginning and 109.6 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.06 ms. Allocated memory is still 136.3 MB. Free memory was 100.1 MB in the beginning and 109.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.42 ms. Allocated memory is still 136.3 MB. Free memory was 108.7 MB in the beginning and 107.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.83 ms. Allocated memory is still 136.3 MB. Free memory was 107.0 MB in the beginning and 105.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 601.67 ms. Allocated memory is still 136.3 MB. Free memory was 105.9 MB in the beginning and 89.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1548.20 ms. Allocated memory was 136.3 MB in the beginning and 165.7 MB in the end (delta: 29.4 MB). Free memory was 89.4 MB in the beginning and 134.1 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.85 ms. Allocated memory is still 165.7 MB. Free memory was 134.1 MB in the beginning and 132.0 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i