./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/bary_diverge.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/bary_diverge.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 --- 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-5e519f3 [2022-11-02 20:38:58,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:58,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:58,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:58,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:58,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:58,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:58,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:58,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:58,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:58,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:58,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:58,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:58,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:58,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:58,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:58,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:58,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:58,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:58,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:58,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:58,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:58,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:58,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:58,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:58,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:58,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:58,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:58,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:58,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:58,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:58,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:58,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:58,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:58,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:58,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:58,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:58,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:58,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:58,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:58,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:58,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:38:58,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:58,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:58,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:58,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:58,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:58,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:58,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:58,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:58,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:58,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:58,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:58,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:58,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:58,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:58,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:58,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:58,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:58,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:58,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:58,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:58,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:58,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:58,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:58,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:58,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:58,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:58,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:58,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:58,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:58,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:58,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:58,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:58,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:58,412 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 [2022-11-02 20:38:58,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:58,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:58,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:58,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:58,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:58,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/bary_diverge.c [2022-11-02 20:38:58,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/2c576ab11/be66fe328703461c95d044c9573e4230/FLAG8a1a15529 [2022-11-02 20:38:59,441 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:59,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c [2022-11-02 20:38:59,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/2c576ab11/be66fe328703461c95d044c9573e4230/FLAG8a1a15529 [2022-11-02 20:38:59,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/2c576ab11/be66fe328703461c95d044c9573e4230 [2022-11-02 20:38:59,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:59,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:59,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:59,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:59,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:59,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:59" (1/1) ... [2022-11-02 20:38:59,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a1a7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:59, skipping insertion in model container [2022-11-02 20:38:59,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:59" (1/1) ... [2022-11-02 20:38:59,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:59,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:00,123 WARN L230 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c[632,645] [2022-11-02 20:39:00,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:00,166 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:00,185 WARN L230 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c[632,645] [2022-11-02 20:39:00,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:00,220 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:00,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00 WrapperNode [2022-11-02 20:39:00,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:00,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:00,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:00,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:00,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,254 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2022-11-02 20:39:00,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:00,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:00,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:00,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:00,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:00,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:00,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:00,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:00,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (1/1) ... [2022-11-02 20:39:00,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:00,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:00,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:00,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2022-11-02 20:39:00,385 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2022-11-02 20:39:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:00,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:00,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:00,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:00,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:00,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:00,659 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:00,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:00 BoogieIcfgContainer [2022-11-02 20:39:00,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:00,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:00,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:00,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:00,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:59" (1/3) ... [2022-11-02 20:39:00,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d617fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:00, skipping insertion in model container [2022-11-02 20:39:00,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:00" (2/3) ... [2022-11-02 20:39:00,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d617fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:00, skipping insertion in model container [2022-11-02 20:39:00,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:00" (3/3) ... [2022-11-02 20:39:00,671 INFO L112 eAbstractionObserver]: Analyzing ICFG bary_diverge.c [2022-11-02 20:39:00,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:00,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:00,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:00,756 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=PETRI_NET, 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;@51877473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:00,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:39:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:00,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:00,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:00,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:00,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash 372835822, now seen corresponding path program 1 times [2022-11-02 20:39:00,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:00,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767436317] [2022-11-02 20:39:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:39:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:39:01,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:01,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767436317] [2022-11-02 20:39:01,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767436317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:01,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:01,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010865842] [2022-11-02 20:39:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:01,080 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:39:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:01,104 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2022-11-02 20:39:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-02 20:39:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:01,114 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:39:01,114 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 20:39:01,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:01,122 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2022-11-02 20:39:01,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 20:39:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-02 20:39:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:39:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-02 20:39:01,174 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2022-11-02 20:39:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:01,174 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-02 20:39:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:39:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-02 20:39:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:01,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:01,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:01,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:01,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:01,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash -920244306, now seen corresponding path program 1 times [2022-11-02 20:39:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:01,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795438384] [2022-11-02 20:39:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:01,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:01,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:01,328 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:01,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:39:01,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:01,338 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:39:01,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:39:01,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:39:01 BoogieIcfgContainer [2022-11-02 20:39:01,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:39:01,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:39:01,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:39:01,435 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:39:01,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:00" (3/4) ... [2022-11-02 20:39:01,439 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:39:01,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:39:01,442 INFO L158 Benchmark]: Toolchain (without parser) took 1643.03ms. Allocated memory is still 107.0MB. Free memory was 66.9MB in the beginning and 84.0MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:01,442 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 83.8MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:01,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.00ms. Allocated memory is still 107.0MB. Free memory was 66.8MB in the beginning and 83.0MB in the end (delta: -16.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:39:01,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.92ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 81.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:39:01,448 INFO L158 Benchmark]: Boogie Preprocessor took 25.90ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:01,451 INFO L158 Benchmark]: RCFGBuilder took 379.15ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 69.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:01,452 INFO L158 Benchmark]: TraceAbstraction took 770.84ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 84.6MB in the end (delta: -15.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:01,452 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:01,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 83.8MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.00ms. Allocated memory is still 107.0MB. Free memory was 66.8MB in the beginning and 83.0MB in the end (delta: -16.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.92ms. Allocated memory is still 107.0MB. Free memory was 83.0MB in the beginning and 81.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.90ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 379.15ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 69.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 770.84ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 84.6MB in the end (delta: -15.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory is still 84.0MB. 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 50. Possible FailurePath: [L19] BOOLEAN INIT; [L20] float C1, I; [L34] static float X,Y,Z; VAL [C1=0, I=0, INIT=0, X=0, Y=0, Z=0] [L55] int i; [L57] INIT = TRUE VAL [C1=0, I=0, INIT=1, X=0, Y=0, Z=0] [L58] CALL, EXPR RANDOM_INPUT() VAL [C1=0, I=0, INIT=1, X=0, Y=0, Z=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C1=0, cond=1, I=0, INIT=1, X=0, Y=0, Z=0] [L26] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L27] return x; VAL [\result=54, C1=0, I=0, INIT=1, X=0, x=54, Y=0, Z=0] [L58] RET, EXPR RANDOM_INPUT() VAL [C1=0, I=0, INIT=1, RANDOM_INPUT()=54, X=0, Y=0, Z=0] [L58] C1 = RANDOM_INPUT() [L59] CALL, EXPR RANDOM_INPUT() VAL [C1=54, I=0, INIT=1, X=0, Y=0, Z=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C1=54, cond=1, I=0, INIT=1, X=0, Y=0, Z=0] [L26] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L27] return x; VAL [\result=53, C1=54, I=0, INIT=1, x=53, X=0, Y=0, Z=0] [L59] RET, EXPR RANDOM_INPUT() VAL [C1=54, I=0, INIT=1, RANDOM_INPUT()=53, X=0, Y=0, Z=0] [L59] I = RANDOM_INPUT() [L61] i = 0 VAL [C1=54, I=53, i=0, INIT=1, X=0, Y=0, Z=0] [L61] COND TRUE i < 3600000 [L62] CALL bary() [L36] COND TRUE C1 > 0.f [L37] Z = Y [L38] Y = X VAL [C1=54, I=53, INIT=1, X=0, Y=0, Z=0] [L41] COND TRUE INIT == TRUE [L42] X = I [L43] Y = I [L44] Z = I VAL [C1=54, I=53, INIT=1, X=53, Y=53, Z=53] [L50] CALL __VERIFIER_assert(X >= -5.f && X <= 5.f) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C1=54, cond=0, I=53, INIT=1, X=53, Y=53, Z=53] [L14] reach_error() VAL [\old(cond)=0, C1=54, cond=0, I=53, INIT=1, X=53, Y=53, Z=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, 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, 38 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, 38 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 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 [2022-11-02 20:39:01,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/bary_diverge.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 --- 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-5e519f3 [2022-11-02 20:39:04,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:04,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:04,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:04,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:04,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:04,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:04,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:04,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:04,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:04,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:04,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:04,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:04,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:04,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:04,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:04,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:04,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:04,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:04,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:04,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:04,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:04,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:04,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:04,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:04,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:04,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:04,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:04,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:04,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:04,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:04,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:04,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:04,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:04,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:04,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:04,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:04,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:04,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:04,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:04,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:04,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 20:39:04,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:04,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:04,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:04,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:04,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:04,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:04,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:04,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:04,236 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:04,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:04,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:04,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:04,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:04,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:04,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:04,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:04,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:39:04,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:39:04,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:39:04,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:04,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:04,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:04,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:04,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:04,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:04,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:04,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:04,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:04,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:04,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:04,243 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:39:04,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:39:04,243 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:04,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:04,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:04,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:39:04,244 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 [2022-11-02 20:39:04,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:04,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:04,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:04,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:04,671 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:04,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/bary_diverge.c [2022-11-02 20:39:04,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/a94704c48/a59ad457940847f89fb123de108f3b98/FLAGa1ea853b4 [2022-11-02 20:39:05,353 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:05,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c [2022-11-02 20:39:05,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/a94704c48/a59ad457940847f89fb123de108f3b98/FLAGa1ea853b4 [2022-11-02 20:39:05,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/data/a94704c48/a59ad457940847f89fb123de108f3b98 [2022-11-02 20:39:05,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:05,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:05,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:05,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:05,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:05,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:05,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b3e1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:05, skipping insertion in model container [2022-11-02 20:39:05,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:05" (1/1) ... [2022-11-02 20:39:05,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:05,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:05,901 WARN L230 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c[632,645] [2022-11-02 20:39:05,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:05,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:05,983 WARN L230 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_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/sv-benchmarks/c/float-benchs/bary_diverge.c[632,645] [2022-11-02 20:39:06,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:06,035 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:06,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06 WrapperNode [2022-11-02 20:39:06,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:06,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:06,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:06,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:06,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,105 INFO L138 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2022-11-02 20:39:06,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:06,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:06,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:06,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:06,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:06,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:06,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:06,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:06,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (1/1) ... [2022-11-02 20:39:06,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:06,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:06,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:06,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2022-11-02 20:39:06,273 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2022-11-02 20:39:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:39:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:06,409 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:06,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:07,178 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:07,185 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:07,186 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:07,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:07 BoogieIcfgContainer [2022-11-02 20:39:07,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:07,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:07,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:07,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:07,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:05" (1/3) ... [2022-11-02 20:39:07,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66935e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:07, skipping insertion in model container [2022-11-02 20:39:07,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:06" (2/3) ... [2022-11-02 20:39:07,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66935e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:07, skipping insertion in model container [2022-11-02 20:39:07,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:07" (3/3) ... [2022-11-02 20:39:07,231 INFO L112 eAbstractionObserver]: Analyzing ICFG bary_diverge.c [2022-11-02 20:39:07,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:07,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:07,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:07,371 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=PETRI_NET, 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;@61adf7f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:07,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:39:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:07,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:07,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:07,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash 372835822, now seen corresponding path program 1 times [2022-11-02 20:39:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859852559] [2022-11-02 20:39:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:07,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:07,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:07,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:39:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:07,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:39:07,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:07,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:07,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859852559] [2022-11-02 20:39:07,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859852559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:07,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:07,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:07,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252756665] [2022-11-02 20:39:07,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:07,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:07,609 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:39:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:07,634 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2022-11-02 20:39:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-02 20:39:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:07,645 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:39:07,646 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 20:39:07,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:07,653 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2022-11-02 20:39:07,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 20:39:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-02 20:39:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:39:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-02 20:39:07,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2022-11-02 20:39:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:07,697 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-02 20:39:07,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:39:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-02 20:39:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:07,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:07,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:07,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:39:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:07,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -920244306, now seen corresponding path program 1 times [2022-11-02 20:39:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:07,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603633531] [2022-11-02 20:39:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:07,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:07,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:07,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:07,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:39:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:08,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:39:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:08,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:08,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:08,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603633531] [2022-11-02 20:39:08,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603633531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:08,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:08,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:39:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435583324] [2022-11-02 20:39:08,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:39:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:39:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:39:08,731 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:39:11,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:12,625 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-11-02 20:39:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:39:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-02 20:39:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:12,629 INFO L225 Difference]: With dead ends: 54 [2022-11-02 20:39:12,629 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 20:39:12,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:39:12,632 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:12,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 190 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 20:39:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 20:39:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2022-11-02 20:39:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 20:39:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2022-11-02 20:39:12,647 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 22 [2022-11-02 20:39:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:12,647 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-11-02 20:39:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:39:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-11-02 20:39:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:12,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:12,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:12,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:12,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:12,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash -920184724, now seen corresponding path program 1 times [2022-11-02 20:39:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:12,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470387863] [2022-11-02 20:39:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:12,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:12,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:12,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:39:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:13,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:39:13,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:39:13,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:13,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:13,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470387863] [2022-11-02 20:39:13,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470387863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:13,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:13,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:39:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125100973] [2022-11-02 20:39:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:13,312 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:39:15,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:15,458 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2022-11-02 20:39:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:15,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-02 20:39:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:15,489 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:39:15,490 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 20:39:15,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:15,493 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:15,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:39:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 20:39:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-11-02 20:39:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:39:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-11-02 20:39:15,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 22 [2022-11-02 20:39:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:15,515 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-11-02 20:39:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:39:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-11-02 20:39:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:39:15,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:15,517 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:15,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:39:15,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:15,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -961441789, now seen corresponding path program 1 times [2022-11-02 20:39:15,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856959928] [2022-11-02 20:39:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:15,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:15,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:15,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:15,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:39:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:15,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:39:15,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 20:39:16,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:16,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:16,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856959928] [2022-11-02 20:39:16,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856959928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:16,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:16,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:39:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019779720] [2022-11-02 20:39:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:16,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:39:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:39:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:39:16,447 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:39:19,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:20,147 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2022-11-02 20:39:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:39:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-11-02 20:39:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:20,150 INFO L225 Difference]: With dead ends: 83 [2022-11-02 20:39:20,150 INFO L226 Difference]: Without dead ends: 81 [2022-11-02 20:39:20,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:39:20,152 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 52 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:20,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 217 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:39:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-02 20:39:20,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2022-11-02 20:39:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 20:39:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-02 20:39:20,168 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 52 [2022-11-02 20:39:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:20,168 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-02 20:39:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:39:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-02 20:39:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:39:20,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:20,178 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:20,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:20,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:20,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -961382207, now seen corresponding path program 1 times [2022-11-02 20:39:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181020602] [2022-11-02 20:39:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:20,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:20,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:20,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782583ec-7e52-4b1b-b8a4-2d3b89f9622b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:39:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:39:20,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:33,536 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((~Z~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ~Z~0 (fp.neg .cse0)) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) ~Z~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) ~Z~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) ~Z~0)) c_~X~0) (fp.leq ~Z~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-02 20:40:04,322 WARN L833 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 50000001.0 100000000.0))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 30000001.0 100000000.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 20000001.0 100000000.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 5.0)) (.cse5 (fp.neg .cse4))) (or (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (not (fp.leq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) .cse3)) (fp.leq ~Z~0 .cse4) (fp.geq ~Z~0 .cse5))) (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (fp.leq ~Z~0 .cse4) (not (fp.geq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) (fp.neg .cse3))) (fp.geq ~Z~0 .cse5))))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) is different from false [2022-11-02 20:40:31,350 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 50000001.0 100000000.0))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 30000001.0 100000000.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 20000001.0 100000000.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 5.0)) (.cse5 (fp.neg .cse4))) (or (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (not (fp.leq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) .cse3)) (fp.leq ~Z~0 .cse4) (fp.geq ~Z~0 .cse5))) (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (fp.leq ~Z~0 .cse4) (not (fp.geq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) (fp.neg .cse3))) (fp.geq ~Z~0 .cse5)))))) is different from false [2022-11-02 20:40:33,386 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 50000001.0 100000000.0))) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 30000001.0 100000000.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 20000001.0 100000000.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 5.0)) (.cse5 (fp.neg .cse4))) (or (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (not (fp.leq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) .cse3)) (fp.leq ~Z~0 .cse4) (fp.geq ~Z~0 .cse5))) (exists ((~Z~0 (_ FloatingPoint 8 24))) (and (fp.leq ~Z~0 .cse4) (not (fp.geq (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 ~Z~0) (fp.mul roundNearestTiesToEven .cse1 ~Z~0)) (fp.mul roundNearestTiesToEven .cse2 ~Z~0)) (fp.neg .cse3))) (fp.geq ~Z~0 .cse5)))))) is different from true [2022-11-02 20:40:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2022-11-02 20:40:33,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:43,756 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~X~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~Y~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~Z~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2022-11-02 20:40:45,785 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~X~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~Y~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~Z~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2022-11-02 20:40:56,010 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~X~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~X~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~Y~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2022-11-02 20:40:58,038 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~X~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~X~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~Y~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2022-11-02 20:42:54,577 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~I~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~I~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~I~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2022-11-02 20:42:56,605 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) c_~I~0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) c_~I~0)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) c_~I~0))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2022-11-02 20:43:17,979 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2022-11-02 20:43:20,008 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 50000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 30000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 20000001.0 100000000.0)) |c_ULTIMATE.start_main_#t~ret6#1|))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode 5.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true