./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS --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 bca44e052eefc6b00b866663e43486330f5a5934fb493dcac1ddb036e3b264d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:36:14,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:36:14,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:36:14,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:36:14,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:36:14,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:36:14,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:36:14,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:36:14,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:36:14,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:36:14,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:36:14,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:36:14,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:36:14,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:36:14,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:36:14,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:36:14,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:36:14,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:36:14,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:36:14,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:36:14,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:36:14,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:36:14,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:36:14,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:36:14,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:36:14,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:36:14,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:36:14,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:36:14,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:36:14,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:36:14,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:36:14,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:36:14,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:36:14,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:36:14,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:36:14,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:36:14,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:36:14,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:36:14,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:36:14,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:36:14,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:36:14,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:36:14,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:36:14,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:36:14,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:36:14,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:36:14,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:36:14,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:36:14,502 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:36:14,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:36:14,502 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:36:14,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:36:14,503 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:36:14,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:36:14,504 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:36:14,504 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:36:14,504 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:36:14,504 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:36:14,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:36:14,505 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:36:14,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:36:14,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:36:14,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:36:14,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:36:14,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:36:14,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:36:14,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:36:14,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:36:14,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:36:14,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:36:14,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:36:14,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:36:14,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:36:14,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:36:14,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:14,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:36:14,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:36:14,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:36:14,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:36:14,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:36:14,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:36:14,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:36:14,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:36:14,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bca44e052eefc6b00b866663e43486330f5a5934fb493dcac1ddb036e3b264d6 [2022-11-19 08:36:14,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:36:14,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:36:14,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:36:14,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:36:14,824 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:36:14,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-fpi/eqn3f.c [2022-11-19 08:36:14,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/data/2da5ba5c9/2026a64f54014550bb124fc89dff41dd/FLAG165030bfb [2022-11-19 08:36:15,329 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:15,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/sv-benchmarks/c/array-fpi/eqn3f.c [2022-11-19 08:36:15,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/data/2da5ba5c9/2026a64f54014550bb124fc89dff41dd/FLAG165030bfb [2022-11-19 08:36:15,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/data/2da5ba5c9/2026a64f54014550bb124fc89dff41dd [2022-11-19 08:36:15,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:15,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:15,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:15,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:15,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:15,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc5f9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15, skipping insertion in model container [2022-11-19 08:36:15,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:15,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:36:15,965 WARN L234 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_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2022-11-19 08:36:15,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:15,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:36:16,005 WARN L234 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_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2022-11-19 08:36:16,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:16,026 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:36:16,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16 WrapperNode [2022-11-19 08:36:16,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:16,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:16,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:36:16,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:36:16,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,080 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-19 08:36:16,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:16,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:36:16,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:36:16,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:36:16,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:36:16,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:36:16,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:36:16,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:36:16,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (1/1) ... [2022-11-19 08:36:16,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:16,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:36:16,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:36:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:36:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:36:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:36:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:36:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:36:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:36:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:36:16,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:36:16,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:36:16,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:36:16,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:36:16,606 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:36:16,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:16 BoogieIcfgContainer [2022-11-19 08:36:16,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:36:16,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:36:16,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:36:16,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:36:16,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:15" (1/3) ... [2022-11-19 08:36:16,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5a937b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:16, skipping insertion in model container [2022-11-19 08:36:16,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:16" (2/3) ... [2022-11-19 08:36:16,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5a937b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:16, skipping insertion in model container [2022-11-19 08:36:16,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:16" (3/3) ... [2022-11-19 08:36:16,616 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2022-11-19 08:36:16,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:36:16,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:36:16,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:36:16,704 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@794f35ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:36:16,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:36:16,714 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) [2022-11-19 08:36:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:36:16,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:16,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:16,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2022-11-19 08:36:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:16,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671470476] [2022-11-19 08:36:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:16,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:16,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:36:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040308884] [2022-11-19 08:36:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:16,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:16,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:16,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:36:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:17,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:36:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:17,071 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:36:17,076 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:36:17,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:36:17,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 08:36:17,289 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:36:17,293 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:36:17,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:36:17 BoogieIcfgContainer [2022-11-19 08:36:17,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:36:17,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:36:17,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:36:17,313 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:36:17,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:16" (3/4) ... [2022-11-19 08:36:17,317 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:36:17,355 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4dd3af8-30a5-4ce2-aff6-3a23292ec058/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:36:17,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:36:17,356 INFO L158 Benchmark]: Toolchain (without parser) took 1629.09ms. Allocated memory is still 115.3MB. Free memory was 82.1MB in the beginning and 82.1MB in the end (delta: 9.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:17,357 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:17,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.53ms. Allocated memory is still 115.3MB. Free memory was 81.9MB in the beginning and 90.3MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:36:17,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.93ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:17,359 INFO L158 Benchmark]: Boogie Preprocessor took 37.22ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 87.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:17,359 INFO L158 Benchmark]: RCFGBuilder took 488.56ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 73.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:36:17,360 INFO L158 Benchmark]: TraceAbstraction took 701.53ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 84.1MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:17,360 INFO L158 Benchmark]: Witness Printer took 43.36ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:17,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.53ms. Allocated memory is still 115.3MB. Free memory was 81.9MB in the beginning and 90.3MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.93ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.22ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 87.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.56ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 73.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 701.53ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 84.1MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.36ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 6 [L32] b[0] = 10 [L34] i=1 VAL [a={-2:0}, b={-1:0}, i=1, N=1] [L34] COND FALSE !(i