./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- 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-2329fc7 [2022-12-14 15:40:07,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:40:07,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:40:07,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:40:07,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:40:07,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:40:07,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:40:07,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:40:07,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:40:07,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:40:07,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:40:07,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:40:07,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:40:07,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:40:07,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:40:07,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:40:07,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:40:07,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:40:07,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:40:07,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:40:07,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:40:07,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:40:07,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:40:07,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:40:07,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:40:07,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:40:07,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:40:07,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:40:07,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:40:07,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:40:07,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:40:07,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:40:07,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:40:07,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:40:07,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:40:07,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:40:07,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:40:07,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:40:07,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:40:07,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:40:07,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:40:07,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:40:07,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:40:07,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:40:07,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:40:07,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:40:07,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:40:07,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:40:07,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:40:07,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:40:07,277 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:40:07,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:40:07,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:40:07,277 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:40:07,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:40:07,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:40:07,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:40:07,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:40:07,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:40:07,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:40:07,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:40:07,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:40:07,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:40:07,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:40:07,280 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_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2022-12-14 15:40:07,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:40:07,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:40:07,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:40:07,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:40:07,473 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:40:07,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-12-14 15:40:10,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:40:10,215 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:40:10,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-12-14 15:40:10,220 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/a3862ed24/08287da06591413eb452e6a9b377960d/FLAG75bcd25f5 [2022-12-14 15:40:10,230 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/a3862ed24/08287da06591413eb452e6a9b377960d [2022-12-14 15:40:10,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:40:10,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:40:10,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:40:10,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:40:10,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:40:10,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5904b9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10, skipping insertion in model container [2022-12-14 15:40:10,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:40:10,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:40:10,366 WARN L237 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_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-12-14 15:40:10,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:40:10,383 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:40:10,392 WARN L237 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_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-12-14 15:40:10,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:40:10,403 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:40:10,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10 WrapperNode [2022-12-14 15:40:10,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:40:10,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:40:10,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:40:10,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:40:10,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,427 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2022-12-14 15:40:10,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:40:10,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:40:10,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:40:10,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:40:10,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:40:10,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:40:10,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:40:10,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:40:10,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (1/1) ... [2022-12-14 15:40:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:40:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:40:10,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:40:10,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:40:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:40:10,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:40:10,555 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:40:10,557 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:40:10,639 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:40:10,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:40:10,659 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:40:10,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:10 BoogieIcfgContainer [2022-12-14 15:40:10,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:40:10,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:40:10,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:40:10,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:40:10,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:40:10" (1/3) ... [2022-12-14 15:40:10,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6095cf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:10, skipping insertion in model container [2022-12-14 15:40:10,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:10" (2/3) ... [2022-12-14 15:40:10,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6095cf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:10, skipping insertion in model container [2022-12-14 15:40:10,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:10" (3/3) ... [2022-12-14 15:40:10,670 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2022-12-14 15:40:10,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:40:10,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:40:10,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:40:10,728 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;@1eaf67ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:40:10,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:40:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) 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) [2022-12-14 15:40:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:40:10,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:10,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:40:10,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash 62074611, now seen corresponding path program 1 times [2022-12-14 15:40:10,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:40:10,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588109576] [2022-12-14 15:40:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:10,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:40:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:40:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:40:10,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:40:10,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588109576] [2022-12-14 15:40:10,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588109576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:40:10,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:40:10,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:40:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188337157] [2022-12-14 15:40:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:40:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:40:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:40:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:40:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:40:10,875 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 15:40:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:40:10,891 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-12-14 15:40:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:40:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-12-14 15:40:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:40:10,899 INFO L225 Difference]: With dead ends: 15 [2022-12-14 15:40:10,899 INFO L226 Difference]: Without dead ends: 7 [2022-12-14 15:40:10,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:40:10,903 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:40:10,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:40:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-12-14 15:40:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-12-14 15:40:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2022-12-14 15:40:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-12-14 15:40:10,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-12-14 15:40:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:40:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-12-14 15:40:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 15:40:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-12-14 15:40:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 15:40:10,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:10,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 15:40:10,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:40:10,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1900119729, now seen corresponding path program 1 times [2022-12-14 15:40:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:40:10,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749504249] [2022-12-14 15:40:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:10,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:40:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:40:10,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:40:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:40:10,964 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:40:10,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:40:10,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:40:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:40:10,970 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 15:40:10,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:40:10,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:40:10 BoogieIcfgContainer [2022-12-14 15:40:10,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:40:10,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:40:10,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:40:10,985 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:40:10,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:10" (3/4) ... [2022-12-14 15:40:10,987 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:40:10,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:40:10,987 INFO L158 Benchmark]: Toolchain (without parser) took 753.79ms. Allocated memory is still 163.6MB. Free memory was 125.4MB in the beginning and 78.5MB in the end (delta: 46.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 15:40:10,988 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 163.6MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:10,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.47ms. Allocated memory is still 163.6MB. Free memory was 125.0MB in the beginning and 114.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 15:40:10,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.87ms. Allocated memory is still 163.6MB. Free memory was 114.9MB in the beginning and 113.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:10,989 INFO L158 Benchmark]: Boogie Preprocessor took 14.07ms. Allocated memory is still 163.6MB. Free memory was 113.7MB in the beginning and 112.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:40:10,989 INFO L158 Benchmark]: RCFGBuilder took 218.73ms. Allocated memory is still 163.6MB. Free memory was 112.4MB in the beginning and 102.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 15:40:10,989 INFO L158 Benchmark]: TraceAbstraction took 320.15ms. Allocated memory is still 163.6MB. Free memory was 101.5MB in the beginning and 78.9MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 15:40:10,990 INFO L158 Benchmark]: Witness Printer took 2.72ms. Allocated memory is still 163.6MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:10,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 163.6MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.47ms. Allocated memory is still 163.6MB. Free memory was 125.0MB in the beginning and 114.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.87ms. Allocated memory is still 163.6MB. Free memory was 114.9MB in the beginning and 113.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.07ms. Allocated memory is still 163.6MB. Free memory was 113.7MB in the beginning and 112.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 218.73ms. Allocated memory is still 163.6MB. Free memory was 112.4MB in the beginning and 102.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 320.15ms. Allocated memory is still 163.6MB. Free memory was 101.5MB in the beginning and 78.9MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.72ms. Allocated memory is still 163.6MB. Free memory is still 78.5MB. There was no memory consumed. 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 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1, term=1] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, temp=0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 15:40:11,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- 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-2329fc7 [2022-12-14 15:40:12,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:40:12,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:40:12,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:40:12,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:40:12,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:40:12,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:40:12,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:40:12,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:40:12,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:40:12,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:40:12,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:40:12,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:40:12,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:40:12,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:40:12,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:40:12,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:40:12,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:40:12,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:40:12,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:40:12,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:40:12,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:40:12,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:40:12,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:40:12,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:40:12,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:40:12,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:40:12,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:40:12,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:40:12,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:40:12,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:40:12,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:40:12,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:40:12,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:40:12,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:40:12,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:40:12,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:40:12,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:40:12,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:40:12,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:40:12,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:40:12,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 15:40:12,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:40:12,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:40:12,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:40:12,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:40:12,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:40:12,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:40:12,804 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:40:12,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:40:12,804 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:40:12,804 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:40:12,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:40:12,805 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:40:12,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:40:12,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:40:12,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:40:12,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:40:12,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:40:12,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:40:12,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:40:12,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:40:12,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:40:12,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:40:12,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:40:12,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:40:12,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:40:12,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:40:12,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:40:12,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:40:12,810 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2022-12-14 15:40:13,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:40:13,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:40:13,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:40:13,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:40:13,071 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:40:13,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-12-14 15:40:15,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:40:15,830 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:40:15,830 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-12-14 15:40:15,835 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/04cdc6bd8/d14cf763703d47caba84b41fadb4dc44/FLAG7efe72bf4 [2022-12-14 15:40:15,846 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/data/04cdc6bd8/d14cf763703d47caba84b41fadb4dc44 [2022-12-14 15:40:15,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:40:15,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:40:15,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:40:15,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:40:15,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:40:15,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:40:15" (1/1) ... [2022-12-14 15:40:15,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346c4880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:15, skipping insertion in model container [2022-12-14 15:40:15,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:40:15" (1/1) ... [2022-12-14 15:40:15,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:40:15,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:40:15,973 WARN L237 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_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-12-14 15:40:15,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:40:15,994 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:40:16,003 WARN L237 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_e0950e05-d16b-4060-b96b-82e8535ce621/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-12-14 15:40:16,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:40:16,016 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:40:16,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16 WrapperNode [2022-12-14 15:40:16,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:40:16,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:40:16,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:40:16,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:40:16,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,041 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2022-12-14 15:40:16,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:40:16,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:40:16,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:40:16,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:40:16,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:40:16,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:40:16,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:40:16,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:40:16,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (1/1) ... [2022-12-14 15:40:16,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:40:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:40:16,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:40:16,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:40:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:40:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 15:40:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:40:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:40:16,177 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:40:16,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:40:20,069 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:40:20,074 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:40:20,074 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:40:20,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:20 BoogieIcfgContainer [2022-12-14 15:40:20,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:40:20,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:40:20,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:40:20,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:40:20,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:40:15" (1/3) ... [2022-12-14 15:40:20,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfd9338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:20, skipping insertion in model container [2022-12-14 15:40:20,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:16" (2/3) ... [2022-12-14 15:40:20,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfd9338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:20, skipping insertion in model container [2022-12-14 15:40:20,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:20" (3/3) ... [2022-12-14 15:40:20,087 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2022-12-14 15:40:20,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:40:20,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:40:20,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:40:20,140 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;@3fec43e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:40:20,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:40:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) [2022-12-14 15:40:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 15:40:20,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:20,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 15:40:20,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2022-12-14 15:40:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:40:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738619235] [2022-12-14 15:40:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:20,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:40:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:40:20,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:40:20,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 15:40:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:40:20,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 15:40:20,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:40:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:40:20,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:40:20,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:40:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738619235] [2022-12-14 15:40:20,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738619235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:40:20,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:40:20,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:40:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110239635] [2022-12-14 15:40:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:40:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:40:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:40:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:40:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:40:20,475 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 15:40:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:40:20,484 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-12-14 15:40:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:40:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-12-14 15:40:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:40:20,490 INFO L225 Difference]: With dead ends: 20 [2022-12-14 15:40:20,490 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 15:40:20,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:40:20,495 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:40:20,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:40:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 15:40:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 15:40:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-12-14 15:40:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 15:40:20,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-12-14 15:40:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:40:20,515 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 15:40:20,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-12-14 15:40:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 15:40:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 15:40:20,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:40:20,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:40:20,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:40:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:40:20,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:40:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:40:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2022-12-14 15:40:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:40:20,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587604314] [2022-12-14 15:40:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:40:20,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:40:20,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:40:20,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:40:20,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 15:40:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:40:21,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:40:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:40:21,755 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 15:40:21,755 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:40:21,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:40:21,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 15:40:21,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:40:21,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 15:40:21,977 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:40:22,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:40:22 BoogieIcfgContainer [2022-12-14 15:40:22,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:40:22,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:40:22,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:40:22,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:40:22,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:20" (3/4) ... [2022-12-14 15:40:22,013 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 15:40:22,037 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:40:22,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:40:22,038 INFO L158 Benchmark]: Toolchain (without parser) took 6188.89ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 37.1MB in the end (delta: 23.1MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-12-14 15:40:22,038 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:22,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.24ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 49.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 15:40:22,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.00ms. Allocated memory is still 81.8MB. Free memory was 49.2MB in the beginning and 47.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:22,039 INFO L158 Benchmark]: Boogie Preprocessor took 18.08ms. Allocated memory is still 81.8MB. Free memory was 47.7MB in the beginning and 46.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:40:22,039 INFO L158 Benchmark]: RCFGBuilder took 4019.88ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 61.8MB in the end (delta: -15.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-12-14 15:40:22,040 INFO L158 Benchmark]: TraceAbstraction took 1928.37ms. Allocated memory is still 81.8MB. Free memory was 61.4MB in the beginning and 38.8MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 15:40:22,040 INFO L158 Benchmark]: Witness Printer took 26.46ms. Allocated memory is still 81.8MB. Free memory was 38.8MB in the beginning and 37.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:40:22,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.24ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 49.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.00ms. Allocated memory is still 81.8MB. Free memory was 49.2MB in the beginning and 47.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.08ms. Allocated memory is still 81.8MB. Free memory was 47.7MB in the beginning and 46.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4019.88ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 61.8MB in the end (delta: -15.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1928.37ms. Allocated memory is still 81.8MB. Free memory was 61.4MB in the beginning and 38.8MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 26.46ms. Allocated memory is still 81.8MB. Free memory was 38.8MB in the beginning and 37.1MB in the end (delta: 1.7MB). There was no memory consumed. 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: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1.0, result=-0.00000000000000000010842021724855044, term=1.0, x=18446744073709552000] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, exp=18446744073709552000, result=-0.00000000000000000010842021724855044, temp=0, term=18446744073709552000, x=18446744073709552000] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 15:40:22,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0950e05-d16b-4060-b96b-82e8535ce621/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE