./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:54:41,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:54:41,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:54:41,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:54:41,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:54:41,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:54:41,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:54:41,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:54:41,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:54:41,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:54:41,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:54:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:54:41,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:54:41,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:54:41,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:54:41,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:54:41,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:54:41,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:54:41,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:54:41,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:54:41,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:54:41,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:54:41,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:54:41,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:54:41,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:54:41,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:54:41,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:54:41,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:54:41,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:54:41,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:54:41,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:54:41,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:54:41,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:54:41,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:54:41,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:54:41,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:54:41,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:54:41,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:54:41,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:54:41,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:54:41,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:54:41,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:54:41,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:54:41,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:54:41,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:54:41,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:54:41,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:54:41,600 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:54:41,600 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:54:41,600 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:54:41,600 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:54:41,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:54:41,601 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:54:41,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:54:41,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:54:41,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:54:41,601 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:54:41,602 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:54:41,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:54:41,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:54:41,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:54:41,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:54:41,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:54:41,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:54:41,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:54:41,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:54:41,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:54:41,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:54:41,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:54:41,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:54:41,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:54:41,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:54:41,607 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef [2021-11-12 23:54:41,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:54:41,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:54:41,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:54:41,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:54:41,868 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:54:41,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2021-11-12 23:54:41,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/900c5dff0/9e19cdea398d4cb79d78b2ee18f581e0/FLAG23c170c67 [2021-11-12 23:54:42,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:54:42,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2021-11-12 23:54:42,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/900c5dff0/9e19cdea398d4cb79d78b2ee18f581e0/FLAG23c170c67 [2021-11-12 23:54:42,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/900c5dff0/9e19cdea398d4cb79d78b2ee18f581e0 [2021-11-12 23:54:42,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:54:42,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:54:42,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:42,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:54:42,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:54:42,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:42" (1/1) ... [2021-11-12 23:54:42,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efb4278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:42, skipping insertion in model container [2021-11-12 23:54:42,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:42" (1/1) ... [2021-11-12 23:54:42,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:54:42,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:54:43,033 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2021-11-12 23:54:43,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:43,058 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:54:43,141 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2021-11-12 23:54:43,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:43,174 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:54:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43 WrapperNode [2021-11-12 23:54:43,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:43,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:43,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:54:43,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:54:43,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:43,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:54:43,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:54:43,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:54:43,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:54:43,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:54:43,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:54:43,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:54:43,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (1/1) ... [2021-11-12 23:54:43,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:54:43,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:43,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:54:43,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:54:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:54:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:54:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 23:54:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:54:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 23:54:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-12 23:54:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-12 23:54:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:54:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:54:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:54:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-12 23:54:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-11-12 23:54:43,410 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-11-12 23:54:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:54:44,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:54:44,034 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-12 23:54:44,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:44 BoogieIcfgContainer [2021-11-12 23:54:44,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:54:44,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:54:44,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:54:44,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:54:44,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:54:42" (1/3) ... [2021-11-12 23:54:44,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8fe254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:44, skipping insertion in model container [2021-11-12 23:54:44,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:43" (2/3) ... [2021-11-12 23:54:44,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8fe254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:44, skipping insertion in model container [2021-11-12 23:54:44,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:44" (3/3) ... [2021-11-12 23:54:44,052 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661b.c [2021-11-12 23:54:44,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:54:44,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:54:44,108 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:54:44,115 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:54:44,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:54:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 62 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:54:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:54:44,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:44,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:44,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1923224870, now seen corresponding path program 1 times [2021-11-12 23:54:44,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:54:44,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706965477] [2021-11-12 23:54:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:44,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:54:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:44,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:54:44,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706965477] [2021-11-12 23:54:44,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706965477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:44,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:44,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:54:44,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995520740] [2021-11-12 23:54:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:44,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:54:44,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:54:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:54:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:54:44,375 INFO L87 Difference]: Start difference. First operand has 69 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 62 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:44,430 INFO L93 Difference]: Finished difference Result 136 states and 225 transitions. [2021-11-12 23:54:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:54:44,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:54:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:44,441 INFO L225 Difference]: With dead ends: 136 [2021-11-12 23:54:44,441 INFO L226 Difference]: Without dead ends: 66 [2021-11-12 23:54:44,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:54:44,449 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:44,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 13 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 25.17ms Time] [2021-11-12 23:54:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-12 23:54:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-12 23:54:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:54:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-11-12 23:54:44,495 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 10 [2021-11-12 23:54:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:44,495 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-11-12 23:54:44,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-11-12 23:54:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:54:44,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:44,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:44,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:54:44,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1412060079, now seen corresponding path program 1 times [2021-11-12 23:54:44,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:54:44,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458256495] [2021-11-12 23:54:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:44,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:54:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:54:44,575 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:54:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:54:44,666 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:54:44,666 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:54:44,668 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:54:44,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:54:44,676 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:54:44,679 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:54:44,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:54:44 BoogieIcfgContainer [2021-11-12 23:54:44,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:54:44,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:54:44,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:54:44,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:54:44,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:44" (3/4) ... [2021-11-12 23:54:44,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:54:44,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:54:44,735 INFO L158 Benchmark]: Toolchain (without parser) took 1971.64ms. Allocated memory is still 102.8MB. Free memory was 67.9MB in the beginning and 54.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:44,735 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:44,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.84ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 75.4MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:54:44,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.34ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 72.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:44,737 INFO L158 Benchmark]: Boogie Preprocessor took 59.26ms. Allocated memory is still 102.8MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:44,738 INFO L158 Benchmark]: RCFGBuilder took 729.26ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 45.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-12 23:54:44,738 INFO L158 Benchmark]: TraceAbstraction took 685.75ms. Allocated memory is still 102.8MB. Free memory was 45.1MB in the beginning and 54.9MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:44,739 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.3MB in the end (delta: 589.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:44,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.84ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 75.4MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.34ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 72.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.26ms. Allocated memory is still 102.8MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.26ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 45.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 685.75ms. Allocated memory is still 102.8MB. Free memory was 45.1MB in the beginning and 54.9MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.3MB in the end (delta: 589.9kB). 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: 233]: 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 232, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L218] float x = __VERIFIER_nondet_float(); [L219] float y = 0.0f; VAL [aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, y=0, zero_atan2=0] [L226] COND TRUE x > 0.0f [L229] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000001, \old(y)=0, aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000001, \old(y)=0, aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000001, \old(y)=0, aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=1000000000000000000000000000001, \old(y)=0, aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=0, ix=2139095041, iy=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] [L229] RET, EXPR __ieee754_atan2f(y, x) [L229] float res = __ieee754_atan2f(y, x); [L232] COND TRUE res != 0.0f VAL [aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] [L233] reach_error() VAL [aT_atan={6:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, y=0, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 25.17ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 20.05ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 84 mSDtfsCounter, 13 mSolverCounterSat, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 23:54:44,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:54:47,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:54:47,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:54:47,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:54:47,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:54:47,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:54:47,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:54:47,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:54:47,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:54:47,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:54:47,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:54:47,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:54:47,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:54:47,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:54:47,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:54:47,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:54:47,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:54:47,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:54:47,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:54:47,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:54:47,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:54:47,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:54:47,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:54:47,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:54:47,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:54:47,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:54:47,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:54:47,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:54:47,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:54:47,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:54:47,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:54:47,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:54:47,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:54:47,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:54:47,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:54:47,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:54:47,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:54:47,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:54:47,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:54:47,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:54:47,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:54:47,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:54:47,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:54:47,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:54:47,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:54:47,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:54:47,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:54:47,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:54:47,401 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:54:47,401 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:54:47,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:54:47,401 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:54:47,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:54:47,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:54:47,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:54:47,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:54:47,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:54:47,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:54:47,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:54:47,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:54:47,405 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:54:47,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:54:47,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:54:47,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:54:47,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:54:47,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:54:47,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:54:47,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:54:47,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:54:47,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:54:47,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:54:47,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:54:47,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:54:47,408 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:54:47,409 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:47,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:54:47,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:54:47,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:54:47,410 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_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb7f3afec9a7b0bf288c62eb95c6c2b13307d1b9b48696daca584c7566ec9aef [2021-11-12 23:54:47,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:54:47,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:54:47,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:54:47,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:54:47,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:54:47,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2021-11-12 23:54:47,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/11e6e9f96/dc619d4189c44a00943a837d21ef76f8/FLAGd742344be [2021-11-12 23:54:48,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:54:48,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c [2021-11-12 23:54:48,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/11e6e9f96/dc619d4189c44a00943a837d21ef76f8/FLAGd742344be [2021-11-12 23:54:48,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/data/11e6e9f96/dc619d4189c44a00943a837d21ef76f8 [2021-11-12 23:54:48,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:54:48,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:54:48,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:48,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:54:48,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:54:48,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:48" (1/1) ... [2021-11-12 23:54:48,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0a2249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:48, skipping insertion in model container [2021-11-12 23:54:48,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:48" (1/1) ... [2021-11-12 23:54:48,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:54:48,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:54:49,079 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2021-11-12 23:54:49,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:49,097 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:54:49,163 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/sv-benchmarks/c/float-newlib/float_req_bl_0661b.c[5269,5282] [2021-11-12 23:54:49,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:49,186 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:54:49,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49 WrapperNode [2021-11-12 23:54:49,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:49,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:49,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:54:49,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:54:49,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:49,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:54:49,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:54:49,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:54:49,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:54:49,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:54:49,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:54:49,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:54:49,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (1/1) ... [2021-11-12 23:54:49,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:54:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:49,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:54:49,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-12 23:54:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-12 23:54:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:54:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:54:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:54:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-12 23:54:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-11-12 23:54:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-11-12 23:54:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:54:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:55:00,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:55:00,938 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-12 23:55:00,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:55:00 BoogieIcfgContainer [2021-11-12 23:55:00,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:55:00,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:55:00,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:55:00,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:55:00,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:54:48" (1/3) ... [2021-11-12 23:55:00,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863f260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:55:00, skipping insertion in model container [2021-11-12 23:55:00,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:49" (2/3) ... [2021-11-12 23:55:00,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863f260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:55:00, skipping insertion in model container [2021-11-12 23:55:00,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:55:00" (3/3) ... [2021-11-12 23:55:00,948 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661b.c [2021-11-12 23:55:00,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:55:00,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:55:01,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:55:01,009 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:55:01,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:55:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 85 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:55:01,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:01,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:01,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1457381495, now seen corresponding path program 1 times [2021-11-12 23:55:01,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:01,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130140617] [2021-11-12 23:55:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:01,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:01,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:01,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:55:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:02,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:55:02,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:02,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:02,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:02,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130140617] [2021-11-12 23:55:02,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130140617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:02,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:02,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:55:02,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575355759] [2021-11-12 23:55:02,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:02,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:55:02,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:55:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:55:02,255 INFO L87 Difference]: Start difference. First operand has 92 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 85 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:02,287 INFO L93 Difference]: Finished difference Result 181 states and 294 transitions. [2021-11-12 23:55:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:55:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:55:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:02,296 INFO L225 Difference]: With dead ends: 181 [2021-11-12 23:55:02,296 INFO L226 Difference]: Without dead ends: 88 [2021-11-12 23:55:02,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:55:02,304 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:02,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:55:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-12 23:55:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-12 23:55:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 81 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2021-11-12 23:55:02,396 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 11 [2021-11-12 23:55:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:02,396 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2021-11-12 23:55:02,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2021-11-12 23:55:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:55:02,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:02,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:02,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:02,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:02,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash 413175488, now seen corresponding path program 1 times [2021-11-12 23:55:02,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:02,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858082823] [2021-11-12 23:55:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:02,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:02,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:02,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:02,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:55:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:55:03,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:03,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-12 23:55:04,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-12 23:55:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:04,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:06,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:06,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858082823] [2021-11-12 23:55:06,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858082823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:06,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:06,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-12 23:55:06,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616298258] [2021-11-12 23:55:06,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:06,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:55:06,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:55:06,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:55:06,110 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:06,614 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2021-11-12 23:55:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:55:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 13 [2021-11-12 23:55:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:06,621 INFO L225 Difference]: With dead ends: 92 [2021-11-12 23:55:06,621 INFO L226 Difference]: Without dead ends: 88 [2021-11-12 23:55:06,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:55:06,623 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 272.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:06,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1244 Invalid, 75 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 61 Unchecked, 272.53ms Time] [2021-11-12 23:55:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-12 23:55:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-12 23:55:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 81 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2021-11-12 23:55:06,636 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 13 [2021-11-12 23:55:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:06,636 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2021-11-12 23:55:06,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2021-11-12 23:55:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:55:06,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:06,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:06,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:55:06,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:06,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2003357637, now seen corresponding path program 1 times [2021-11-12 23:55:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:06,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200587981] [2021-11-12 23:55:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:06,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:06,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:06,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:55:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:07,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:55:07,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:08,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:08,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:08,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200587981] [2021-11-12 23:55:08,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200587981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:08,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:08,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:55:08,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067188856] [2021-11-12 23:55:08,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:08,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:55:08,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:55:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:08,775 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:09,458 INFO L93 Difference]: Finished difference Result 164 states and 231 transitions. [2021-11-12 23:55:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:55:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 [2021-11-12 23:55:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:09,465 INFO L225 Difference]: With dead ends: 164 [2021-11-12 23:55:09,465 INFO L226 Difference]: Without dead ends: 96 [2021-11-12 23:55:09,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:55:09,467 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 341 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 328.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:09,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 400 Invalid, 28 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 2 Unchecked, 328.93ms Time] [2021-11-12 23:55:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-12 23:55:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2021-11-12 23:55:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 74 states have internal predecessors, (102), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2021-11-12 23:55:09,478 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 18 [2021-11-12 23:55:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:09,479 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2021-11-12 23:55:09,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2021-11-12 23:55:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:55:09,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:09,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:09,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:09,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:09,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -106452547, now seen corresponding path program 1 times [2021-11-12 23:55:09,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:09,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125177692] [2021-11-12 23:55:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:09,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:09,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:09,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:09,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:55:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:10,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:55:10,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:10,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:11,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125177692] [2021-11-12 23:55:11,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125177692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:11,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:11,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:55:11,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356556469] [2021-11-12 23:55:11,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:11,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:55:11,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:55:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:55:11,386 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:12,656 INFO L93 Difference]: Finished difference Result 85 states and 113 transitions. [2021-11-12 23:55:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:55:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 [2021-11-12 23:55:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:12,658 INFO L225 Difference]: With dead ends: 85 [2021-11-12 23:55:12,658 INFO L226 Difference]: Without dead ends: 81 [2021-11-12 23:55:12,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:12,660 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 166 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1021.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1098.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:12,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 531 Invalid, 49 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1098.40ms Time] [2021-11-12 23:55:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-12 23:55:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-12 23:55:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2021-11-12 23:55:12,672 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 18 [2021-11-12 23:55:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:12,672 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2021-11-12 23:55:12,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2021-11-12 23:55:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:55:12,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:12,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:12,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:12,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:12,888 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash 992165108, now seen corresponding path program 1 times [2021-11-12 23:55:12,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:12,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795628719] [2021-11-12 23:55:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:12,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:12,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:12,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:55:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:13,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:55:13,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:13,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-12 23:55:14,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-12 23:55:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:15,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:16,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:16,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795628719] [2021-11-12 23:55:16,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795628719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:16,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:16,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 13 [2021-11-12 23:55:16,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292640928] [2021-11-12 23:55:16,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:16,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:55:16,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:55:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:16,306 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:16,961 INFO L93 Difference]: Finished difference Result 155 states and 206 transitions. [2021-11-12 23:55:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:55:16,962 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19 [2021-11-12 23:55:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:16,963 INFO L225 Difference]: With dead ends: 155 [2021-11-12 23:55:16,963 INFO L226 Difference]: Without dead ends: 89 [2021-11-12 23:55:16,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:55:16,965 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 19 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 338.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 356.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:16,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 745 Invalid, 76 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 26 Unchecked, 356.34ms Time] [2021-11-12 23:55:16,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-12 23:55:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2021-11-12 23:55:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:55:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2021-11-12 23:55:16,976 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 19 [2021-11-12 23:55:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:16,976 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2021-11-12 23:55:16,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:55:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2021-11-12 23:55:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:55:16,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:16,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:17,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:17,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:17,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1527794826, now seen corresponding path program 1 times [2021-11-12 23:55:17,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:17,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093325860] [2021-11-12 23:55:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:17,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:17,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:17,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:55:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:18,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:55:18,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:18,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-12 23:55:18,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-12 23:55:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:18,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:19,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:19,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093325860] [2021-11-12 23:55:19,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093325860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:19,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:19,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-12 23:55:19,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792788328] [2021-11-12 23:55:19,822 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:19,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:55:19,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:55:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:19,823 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2021-11-12 23:55:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:20,277 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2021-11-12 23:55:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:55:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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 19 [2021-11-12 23:55:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:20,279 INFO L225 Difference]: With dead ends: 115 [2021-11-12 23:55:20,279 INFO L226 Difference]: Without dead ends: 47 [2021-11-12 23:55:20,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:55:20,280 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 123.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:20,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 488 Invalid, 38 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 14 Unchecked, 123.06ms Time] [2021-11-12 23:55:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-12 23:55:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-12 23:55:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:55:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2021-11-12 23:55:20,285 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 19 [2021-11-12 23:55:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:20,286 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2021-11-12 23:55:20,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2021-11-12 23:55:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2021-11-12 23:55:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:55:20,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:20,287 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:55:20,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:20,517 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1298567107, now seen corresponding path program 1 times [2021-11-12 23:55:20,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:20,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238557735] [2021-11-12 23:55:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:20,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:20,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:20,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:20,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:55:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:55:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:21,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:22,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:22,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238557735] [2021-11-12 23:55:22,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 23:55:22,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [781532422] [2021-11-12 23:55:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:22,823 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:55:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:55:22,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:55:22,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:55:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:25,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:55:25,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:25,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:26,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 23:55:26,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047597443] [2021-11-12 23:55:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:26,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:55:26,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:55:26,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:55:26,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 23:55:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:26,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:55:26,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:26,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:28,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 23:55:28,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:28,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 23:55:28,030 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 23:55:28,031 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 23:55:28,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:55:28,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:28,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-12 23:55:28,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:28,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:28,667 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:28,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:55:28,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:55:28 BoogieIcfgContainer [2021-11-12 23:55:28,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:55:28,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:55:28,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:55:28,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:55:28,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:55:00" (3/4) ... [2021-11-12 23:55:28,694 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:55:28,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:55:28,695 INFO L158 Benchmark]: Toolchain (without parser) took 39941.41ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.2MB in the beginning and 50.7MB in the end (delta: -10.5MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,695 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:55:28,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.98ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.09ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 36.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,696 INFO L158 Benchmark]: Boogie Preprocessor took 79.15ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 33.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,697 INFO L158 Benchmark]: RCFGBuilder took 11616.29ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 36.8MB in the end (delta: -3.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,697 INFO L158 Benchmark]: TraceAbstraction took 27747.90ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 50.7MB in the end (delta: -14.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-12 23:55:28,697 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 73.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:55:28,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.98ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.09ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 36.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.15ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 33.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 11616.29ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 36.8MB in the end (delta: -3.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 27747.90ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 50.7MB in the end (delta: -14.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 73.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L218] float x = __VERIFIER_nondet_float(); [L219] float y = 0.0f; [L226] COND TRUE x > 0.0f [L229] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND FALSE !(((ix) > 0x7f800000L) || ((iy) > 0x7f800000L)) [L138] COND TRUE hx == 0x3f800000 [L139] CALL, EXPR atan_float(y) [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; [L139] RET, EXPR atan_float(y) [L139] return atan_float(y); [L229] RET, EXPR __ieee754_atan2f(y, x) [L229] float res = __ieee754_atan2f(y, x); [L232] COND TRUE res != 0.0f [L233] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 546 SdHoareTripleChecker+Valid, 2179.25ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 544 mSDsluCounter, 3540 SdHoareTripleChecker+Invalid, 2020.74ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 103 IncrementalHoareTripleChecker+Unchecked, 2930 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138 IncrementalHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 610 mSDtfsCounter, 138 mSolverCounterSat, 17.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 207 ConstructedInterpolants, 39 QuantifiedInterpolants, 1783 SizeOfPredicates, 55 NumberOfNonLiveVariables, 821 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 [2021-11-12 23:55:28,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ed6a2f-1176-4e65-8dc3-204cb29e65d2/bin/utaipan-vmNK8stdcF/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 Writing output log to file Ultimate.log Result: UNKNOWN