./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.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_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/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_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/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_04382917-9827-4b22-af9f-11c14e65a763/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 b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- 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 20:35:19,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:19,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:19,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:19,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:19,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:19,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:19,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:19,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:19,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:19,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:19,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:19,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:19,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:19,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:19,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:19,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:19,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:19,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:19,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:19,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:19,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:19,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:19,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:19,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:19,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:19,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:19,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:19,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:19,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:19,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:19,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:19,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:19,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:19,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:19,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:19,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:19,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:19,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:19,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:19,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:19,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:35:19,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:19,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:19,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:19,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:19,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:19,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:19,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:19,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:19,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:19,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:19,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:35:19,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:35:19,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:35:19,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:19,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:19,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:19,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:19,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:35:19,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:19,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:19,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:19,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:19,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:19,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:19,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:19,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:19,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:19,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:19,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:35:19,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:35:19,425 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:19,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:19,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:19,426 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_04382917-9827-4b22-af9f-11c14e65a763/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2022-11-02 20:35:19,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:19,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:19,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:19,800 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:19,801 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:19,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:19,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/77a6f2714/f4d797881b4342d391fd0ec10812acca/FLAGa57c59412 [2022-11-02 20:35:20,502 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:20,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:20,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/77a6f2714/f4d797881b4342d391fd0ec10812acca/FLAGa57c59412 [2022-11-02 20:35:20,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/77a6f2714/f4d797881b4342d391fd0ec10812acca [2022-11-02 20:35:20,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:20,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:20,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:20,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:20,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:20,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:20,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f8db6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:20, skipping insertion in model container [2022-11-02 20:35:20,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:20" (1/1) ... [2022-11-02 20:35:20,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:20,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:21,141 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-02 20:35:21,152 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-02 20:35:21,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:21,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:21,215 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-02 20:35:21,221 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-02 20:35:21,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:21,245 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:21,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21 WrapperNode [2022-11-02 20:35:21,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:21,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:21,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:21,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:21,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,303 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 150 [2022-11-02 20:35:21,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:21,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:21,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:21,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:21,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:21,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:21,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:21,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:21,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (1/1) ... [2022-11-02 20:35:21,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:21,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:21,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:21,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:35:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:35:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:21,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:21,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:21,881 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:21,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:21,888 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:35:21,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:21 BoogieIcfgContainer [2022-11-02 20:35:21,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:21,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:21,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:21,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:21,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:20" (1/3) ... [2022-11-02 20:35:21,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786bb8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:21, skipping insertion in model container [2022-11-02 20:35:21,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:21" (2/3) ... [2022-11-02 20:35:21,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786bb8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:21, skipping insertion in model container [2022-11-02 20:35:21,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:21" (3/3) ... [2022-11-02 20:35:21,917 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:21,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:21,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:35:22,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:22,026 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;@30288301, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:22,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:35:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:35:22,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:22,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:22,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash 346658074, now seen corresponding path program 1 times [2022-11-02 20:35:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:22,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680018606] [2022-11-02 20:35:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:22,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:35:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:22,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:35:22,285 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:35:22,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-02 20:35:22,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-02 20:35:22,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:35:22,294 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:35:22,300 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:35:22,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:35:22 BoogieIcfgContainer [2022-11-02 20:35:22,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:35:22,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:35:22,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:35:22,369 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:35:22,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:21" (3/4) ... [2022-11-02 20:35:22,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:35:22,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:35:22,376 INFO L158 Benchmark]: Toolchain (without parser) took 1536.58ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 43.3MB in the end (delta: 16.4MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-11-02 20:35:22,378 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 76.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:35:22,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.77ms. Allocated memory is still 100.7MB. Free memory was 59.5MB in the beginning and 75.0MB in the end (delta: -15.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:35:22,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.92ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:35:22,388 INFO L158 Benchmark]: Boogie Preprocessor took 42.07ms. Allocated memory is still 100.7MB. Free memory was 73.4MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:35:22,390 INFO L158 Benchmark]: RCFGBuilder took 544.42ms. Allocated memory is still 100.7MB. Free memory was 71.7MB in the beginning and 59.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:35:22,391 INFO L158 Benchmark]: TraceAbstraction took 471.88ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 43.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:35:22,391 INFO L158 Benchmark]: Witness Printer took 6.33ms. Allocated memory is still 100.7MB. Free memory was 43.7MB in the beginning and 43.3MB in the end (delta: 401.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:35:22,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 76.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.77ms. Allocated memory is still 100.7MB. Free memory was 59.5MB in the beginning and 75.0MB in the end (delta: -15.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.92ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.07ms. Allocated memory is still 100.7MB. Free memory was 73.4MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 544.42ms. Allocated memory is still 100.7MB. Free memory was 71.7MB in the beginning and 59.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 471.88ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 43.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.33ms. Allocated memory is still 100.7MB. Free memory was 43.7MB in the beginning and 43.3MB in the end (delta: 401.0kB). 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: 67]: 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 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 51. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_160_0; [L13] int __tmp_160_1; [L14] int __tmp_160_2; [L15] int __return_165; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L18] float main__X; [L19] float main__Y; [L20] float main__S; [L21] float main__R; [L22] float main__D; [L23] int main__i; [L24] main__Y = 0 [L25] main__i = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L26] COND TRUE main__i < 100000 [L28] main__X = __VERIFIER_nondet_float() [L29] main__D = __VERIFIER_nondet_float() [L30] int main____CPAchecker_TMP_0; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=54, main__i=0, main__X=53] [L31] COND TRUE main__X >= -128.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=54, main__i=0, main__X=53] [L33] COND TRUE main__X <= 128.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=54, main__i=0, main__X=53] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=54, main__i=0, main__X=53] [L39] COND TRUE main__D >= 0.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=54, main__i=0, main__X=53] [L41] COND TRUE main__D <= 16.0 [L43] main____CPAchecker_TMP_1 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=54, main__i=0, main__X=53] [L44] COND TRUE main____CPAchecker_TMP_1 != 0 [L46] main__S = main__Y [L47] main__Y = main__X [L48] main__R = main__X - main__S VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=54, main__i=0, main__S=55, main__X=53, main__Y=53] [L49] COND TRUE main__R <= (-main__D) [L51] main__Y = main__S - main__D VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=54, main__i=0, main__S=55, main__X=53] [L53] int main____CPAchecker_TMP_2; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=54, main__i=0, main__S=55, main__X=53] [L54] COND FALSE !(main__Y >= -129.0) VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=54, main__i=0, main__S=55, main__X=53] [L205] main____CPAchecker_TMP_2 = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=54, main__i=0, main__S=55, main__X=53] [L61] int __tmp_1; [L62] __tmp_1 = main____CPAchecker_TMP_2 [L63] int __VERIFIER_assert__cond; [L64] __VERIFIER_assert__cond = __tmp_1 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=54, main__i=0, main__S=55, main__X=53] [L65] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=54, main__i=0, main__S=55, main__X=53] [L67] reach_error() VAL [__return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=54, main__i=0, main__S=55, main__X=53] - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:35:22,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/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_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/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_04382917-9827-4b22-af9f-11c14e65a763/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 b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- 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 20:35:25,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:25,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:25,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:25,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:25,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:25,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:25,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:25,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:25,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:25,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:25,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:25,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:25,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:25,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:25,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:25,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:25,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:25,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:25,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:25,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:25,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:25,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:25,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:25,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:25,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:25,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:25,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:25,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:25,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:25,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:25,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:25,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:25,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:25,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:25,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:25,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:25,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:25,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:25,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:25,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:25,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 20:35:25,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:25,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:25,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:25,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:25,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:25,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:25,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:25,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:25,550 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:25,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:25,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:35:25,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:35:25,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:25,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:25,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:25,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:25,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:35:25,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:35:25,554 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:35:25,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:35:25,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:25,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:25,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:25,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:25,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:25,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:25,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:25,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:25,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:25,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:25,557 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:35:25,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:35:25,558 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:25,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:25,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:25,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:35:25,559 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_04382917-9827-4b22-af9f-11c14e65a763/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2022-11-02 20:35:26,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:26,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:26,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:26,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:26,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:26,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:26,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/5fde6e053/04f1e54d1c7a488db3f7e543e1558a5d/FLAG41b479dc9 [2022-11-02 20:35:26,903 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:26,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:26,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/5fde6e053/04f1e54d1c7a488db3f7e543e1558a5d/FLAG41b479dc9 [2022-11-02 20:35:27,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/data/5fde6e053/04f1e54d1c7a488db3f7e543e1558a5d [2022-11-02 20:35:27,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:27,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:27,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:27,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:27,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:27,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f552df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27, skipping insertion in model container [2022-11-02 20:35:27,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:27,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:27,529 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-02 20:35:27,571 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-02 20:35:27,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:27,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:27,676 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2022-11-02 20:35:27,682 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_04382917-9827-4b22-af9f-11c14e65a763/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2022-11-02 20:35:27,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:27,731 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:27,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27 WrapperNode [2022-11-02 20:35:27,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:27,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:27,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:27,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:27,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,814 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 151 [2022-11-02 20:35:27,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:27,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:27,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:27,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:27,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:27,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:27,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:27,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:27,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (1/1) ... [2022-11-02 20:35:27,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:27,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:27,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:27,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:35:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:35:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:28,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:28,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:30,941 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:30,950 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:30,950 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:35:30,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:30 BoogieIcfgContainer [2022-11-02 20:35:30,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:30,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:30,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:30,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:30,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:27" (1/3) ... [2022-11-02 20:35:30,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cad5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:30, skipping insertion in model container [2022-11-02 20:35:30,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:27" (2/3) ... [2022-11-02 20:35:30,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cad5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:30, skipping insertion in model container [2022-11-02 20:35:30,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:30" (3/3) ... [2022-11-02 20:35:30,965 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2022-11-02 20:35:30,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:30,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:35:31,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:31,057 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;@664bcd4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:31,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:35:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:35:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:31,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:31,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash 346658074, now seen corresponding path program 1 times [2022-11-02 20:35:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:31,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334588045] [2022-11-02 20:35:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:31,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:31,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:35:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:31,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:35:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:38,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:35:38,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:38,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334588045] [2022-11-02 20:35:38,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334588045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:38,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:38,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063292349] [2022-11-02 20:35:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:38,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:35:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:35:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:38,889 INFO L87 Difference]: Start difference. First operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:05,471 INFO L93 Difference]: Finished difference Result 114 states and 159 transitions. [2022-11-02 20:36:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:36:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:36:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:05,489 INFO L225 Difference]: With dead ends: 114 [2022-11-02 20:36:05,489 INFO L226 Difference]: Without dead ends: 68 [2022-11-02 20:36:05,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:05,496 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 90 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:05,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 253 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 23 Unchecked, 23.1s Time] [2022-11-02 20:36:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-02 20:36:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2022-11-02 20:36:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-11-02 20:36:05,536 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 16 [2022-11-02 20:36:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:05,536 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-11-02 20:36:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-11-02 20:36:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:36:05,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:05,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:05,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:05,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:05,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash 257195701, now seen corresponding path program 1 times [2022-11-02 20:36:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:05,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323154172] [2022-11-02 20:36:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:05,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:05,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:05,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:36:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:36:05,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:05,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:05,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323154172] [2022-11-02 20:36:05,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323154172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:05,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:05,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025476147] [2022-11-02 20:36:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:36:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:36:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:36:05,946 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:06,019 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2022-11-02 20:36:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:36:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:06,024 INFO L225 Difference]: With dead ends: 66 [2022-11-02 20:36:06,025 INFO L226 Difference]: Without dead ends: 64 [2022-11-02 20:36:06,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:06,027 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:06,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-02 20:36:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-02 20:36:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-02 20:36:06,048 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 16 [2022-11-02 20:36:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:06,048 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-02 20:36:06,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-02 20:36:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:36:06,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:06,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:06,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-02 20:36:06,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:06,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash -533932591, now seen corresponding path program 1 times [2022-11-02 20:36:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:06,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829941003] [2022-11-02 20:36:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:06,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:06,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:36:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:06,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:36:06,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:17,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:17,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:17,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829941003] [2022-11-02 20:36:17,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829941003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:17,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:17,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614027134] [2022-11-02 20:36:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:17,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:36:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:36:17,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:36:17,322 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:28,437 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2022-11-02 20:36:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:36:28,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:36:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:28,448 INFO L225 Difference]: With dead ends: 96 [2022-11-02 20:36:28,448 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:36:28,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:28,451 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:28,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 136 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 24 Unchecked, 8.2s Time] [2022-11-02 20:36:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:36:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2022-11-02 20:36:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2022-11-02 20:36:28,459 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2022-11-02 20:36:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:28,459 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2022-11-02 20:36:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2022-11-02 20:36:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:36:28,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:28,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:28,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:28,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -354879015, now seen corresponding path program 1 times [2022-11-02 20:36:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565234675] [2022-11-02 20:36:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:28,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:28,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:36:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:28,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:36:28,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:35,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:35,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:35,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565234675] [2022-11-02 20:36:35,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565234675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:35,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:35,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:36:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181240257] [2022-11-02 20:36:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:35,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:35,285 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:40,024 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2022-11-02 20:36:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:36:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:36:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:40,030 INFO L225 Difference]: With dead ends: 71 [2022-11-02 20:36:40,030 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 20:36:40,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:36:40,032 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:40,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 26 Unchecked, 2.1s Time] [2022-11-02 20:36:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 20:36:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-02 20:36:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-02 20:36:40,042 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2022-11-02 20:36:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:40,042 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-02 20:36:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-02 20:36:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:36:40,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:40,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:40,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:40,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:40,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1420128347, now seen corresponding path program 1 times [2022-11-02 20:36:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:40,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822396831] [2022-11-02 20:36:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:40,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:40,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:40,247 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:40,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:36:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:40,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:36:40,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:44,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:44,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822396831] [2022-11-02 20:36:44,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822396831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:44,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:44,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078307998] [2022-11-02 20:36:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:44,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:44,843 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:24,884 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2022-11-02 20:37:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:37:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:24,895 INFO L225 Difference]: With dead ends: 137 [2022-11-02 20:37:24,895 INFO L226 Difference]: Without dead ends: 112 [2022-11-02 20:37:24,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:37:24,897 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:24,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 109 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2022-11-02 20:37:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-02 20:37:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 54. [2022-11-02 20:37:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-11-02 20:37:24,908 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2022-11-02 20:37:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:24,908 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-11-02 20:37:24,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-11-02 20:37:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:37:24,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:24,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:24,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:25,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:25,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:25,114 INFO L85 PathProgramCache]: Analyzing trace with hash -806745870, now seen corresponding path program 1 times [2022-11-02 20:37:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:25,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335956375] [2022-11-02 20:37:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:25,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:37:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:37:25,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:37,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:37,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335956375] [2022-11-02 20:37:37,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335956375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:37,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:37,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:37:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893826163] [2022-11-02 20:37:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:37:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:37:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:37:37,119 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:51,023 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2022-11-02 20:37:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:37:51,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:37:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:51,030 INFO L225 Difference]: With dead ends: 86 [2022-11-02 20:37:51,030 INFO L226 Difference]: Without dead ends: 51 [2022-11-02 20:37:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:51,042 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:51,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 80 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 25 Unchecked, 10.4s Time] [2022-11-02 20:37:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-02 20:37:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-11-02 20:37:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-02 20:37:51,049 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2022-11-02 20:37:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:51,049 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-02 20:37:51,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-02 20:37:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:37:51,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:51,052 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-11-02 20:37:51,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:51,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:51,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:51,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1099426199, now seen corresponding path program 1 times [2022-11-02 20:37:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:51,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675060124] [2022-11-02 20:37:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:51,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:51,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:51,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:37:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:51,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:37:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:51,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:37:51,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675060124] [2022-11-02 20:37:51,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675060124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:51,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:51,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:37:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576546218] [2022-11-02 20:37:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:37:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:37:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:37:51,489 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:51,560 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2022-11-02 20:37:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:37:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-02 20:37:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:51,562 INFO L225 Difference]: With dead ends: 78 [2022-11-02 20:37:51,562 INFO L226 Difference]: Without dead ends: 76 [2022-11-02 20:37:51,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:37:51,563 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:51,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:37:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-02 20:37:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2022-11-02 20:37:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2022-11-02 20:37:51,575 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 30 [2022-11-02 20:37:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:51,575 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2022-11-02 20:37:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2022-11-02 20:37:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:37:51,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:51,577 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-11-02 20:37:51,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:51,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1082415538, now seen corresponding path program 1 times [2022-11-02 20:37:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721239666] [2022-11-02 20:37:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:51,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:51,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:51,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04382917-9827-4b22-af9f-11c14e65a763/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:37:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:37:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:27,861 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-02 20:39:29,885 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true