./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs --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 f841b6aef5f414fec53f63b7daa049c759482c9a ....................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs --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 f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:23:28,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:23:28,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:23:28,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:23:28,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:23:28,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:23:28,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:23:28,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:23:28,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:23:28,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:23:28,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:23:28,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:23:28,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:23:28,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:23:28,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:23:28,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:23:28,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:23:28,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:23:28,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:23:28,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:23:28,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:23:28,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:23:28,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:23:28,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:23:28,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:23:28,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:23:28,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:23:28,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:23:28,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:23:28,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:23:28,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:23:28,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:23:28,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:23:28,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:23:28,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:23:28,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:23:28,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:23:28,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:23:28,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:23:28,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:23:28,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:23:28,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:23:28,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:23:28,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:23:28,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:23:28,559 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:23:28,559 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:23:28,559 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:23:28,559 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:23:28,560 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:23:28,566 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:23:28,566 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:23:28,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:23:28,568 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:23:28,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:23:28,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:23:28,569 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:23:28,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:23:28,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:23:28,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:23:28,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:23:28,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:23:28,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:23:28,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:23:28,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:23:28,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:23:28,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:23:28,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:23:28,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:23:28,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:23:28,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:23:28,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:23:28,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:28,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:23:28,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:23:28,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:23:28,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:23:28,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:23:28,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:23:28,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:23:28,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:23:28,578 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_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2021-10-16 02:23:28,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:23:28,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:23:28,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:23:28,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:23:28,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:23:28,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-16 02:23:29,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/b12cf450a/5cab1676614b4144960928d567baffc3/FLAG43a2001cd [2021-10-16 02:23:29,501 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:23:29,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-16 02:23:29,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/b12cf450a/5cab1676614b4144960928d567baffc3/FLAG43a2001cd [2021-10-16 02:23:29,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/b12cf450a/5cab1676614b4144960928d567baffc3 [2021-10-16 02:23:29,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:23:29,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:23:29,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:29,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:23:29,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:23:29,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:29" (1/1) ... [2021-10-16 02:23:29,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a757fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:29, skipping insertion in model container [2021-10-16 02:23:29,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:29" (1/1) ... [2021-10-16 02:23:29,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:23:29,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:23:30,158 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_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-16 02:23:30,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:30,169 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:23:30,186 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_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-16 02:23:30,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:30,201 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:23:30,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30 WrapperNode [2021-10-16 02:23:30,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:30,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:30,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:23:30,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:23:30,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:30,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:23:30,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:23:30,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:23:30,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:23:30,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:23:30,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:23:30,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:23:30,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (1/1) ... [2021-10-16 02:23:30,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:30,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:30,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:23:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:23:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:23:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:23:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:23:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:23:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:23:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:23:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:23:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:23:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:23:30,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:23:30,701 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:23:30,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:30 BoogieIcfgContainer [2021-10-16 02:23:30,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:23:30,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:23:30,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:23:30,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:23:30,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:23:29" (1/3) ... [2021-10-16 02:23:30,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c46d70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:30, skipping insertion in model container [2021-10-16 02:23:30,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:30" (2/3) ... [2021-10-16 02:23:30,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c46d70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:30, skipping insertion in model container [2021-10-16 02:23:30,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:30" (3/3) ... [2021-10-16 02:23:30,712 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-10-16 02:23:30,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:23:30,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:23:30,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:23:30,769 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, mConcurrency=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 [2021-10-16 02:23:30,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:23:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:23:30,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:30,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:23:30,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2102691160, now seen corresponding path program 1 times [2021-10-16 02:23:30,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:30,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35023940] [2021-10-16 02:23:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:30,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:30,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:30,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35023940] [2021-10-16 02:23:30,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35023940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:30,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:30,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:23:30,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581205542] [2021-10-16 02:23:30,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:23:30,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:23:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:23:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:23:30,987 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:31,000 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2021-10-16 02:23:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:23:31,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:23:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:31,012 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:23:31,013 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:23:31,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:23:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:23:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:23:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-16 02:23:31,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-16 02:23:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:31,058 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-16 02:23:31,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-16 02:23:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:23:31,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:31,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:31,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:23:31,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash -291150277, now seen corresponding path program 1 times [2021-10-16 02:23:31,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:31,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853095890] [2021-10-16 02:23:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:31,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:23:31,128 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:23:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:23:31,205 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:23:31,205 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:23:31,207 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:23:31,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:23:31,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:23:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:23:31 BoogieIcfgContainer [2021-10-16 02:23:31,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:23:31,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:23:31,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:23:31,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:23:31,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:30" (3/4) ... [2021-10-16 02:23:31,251 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:23:31,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:23:31,254 INFO L168 Benchmark]: Toolchain (without parser) took 1350.88 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 70.4 MB in the beginning and 95.7 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:31,255 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:31,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.71 ms. Allocated memory is still 104.9 MB. Free memory was 70.2 MB in the beginning and 79.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:31,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.11 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:31,264 INFO L168 Benchmark]: Boogie Preprocessor took 52.37 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:31,265 INFO L168 Benchmark]: RCFGBuilder took 404.86 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 65.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:31,266 INFO L168 Benchmark]: TraceAbstraction took 540.88 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 95.9 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:31,266 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 127.9 MB. Free memory was 95.9 MB in the beginning and 95.7 MB in the end (delta: 212.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:31,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.71 ms. Allocated memory is still 104.9 MB. Free memory was 70.2 MB in the beginning and 79.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.11 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.37 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.86 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 65.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 540.88 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 95.9 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.96 ms. Allocated memory is still 127.9 MB. Free memory was 95.9 MB in the beginning and 95.7 MB in the end (delta: 212.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 454.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.6ms, AutomataDifference: 61.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 68.1ms SatisfiabilityAnalysisTime, 44.1ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-10-16 02:23:31,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:23:33,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:23:33,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:23:33,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:23:33,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:23:33,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:23:33,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:23:33,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:23:33,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:23:33,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:23:33,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:23:33,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:23:33,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:23:33,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:23:33,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:23:33,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:23:33,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:23:33,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:23:33,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:23:33,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:23:33,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:23:33,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:23:33,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:23:33,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:23:33,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:23:33,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:23:33,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:23:33,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:23:33,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:23:33,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:23:33,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:23:33,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:23:33,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:23:33,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:23:33,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:23:33,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:23:33,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:23:33,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:23:33,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:23:33,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:23:33,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:23:33,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:23:33,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:23:33,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:23:33,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:23:33,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:23:33,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:23:33,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:23:33,913 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:23:33,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:23:33,914 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:23:33,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:23:33,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:23:33,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:23:33,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:23:33,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:23:33,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:23:33,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:23:33,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:23:33,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:23:33,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:23:33,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:23:33,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:23:33,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:33,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:23:33,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:23:33,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:23:33,920 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:23:33,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:33,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:23:33,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:23:33,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:23:33,921 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_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2021-10-16 02:23:34,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:23:34,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:23:34,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:23:34,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:23:34,369 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:23:34,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-16 02:23:34,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/46be80790/a2aa72aa05b548b5a319b787f10e6dc5/FLAG4d3934eb4 [2021-10-16 02:23:35,007 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:23:35,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-10-16 02:23:35,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/46be80790/a2aa72aa05b548b5a319b787f10e6dc5/FLAG4d3934eb4 [2021-10-16 02:23:35,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/data/46be80790/a2aa72aa05b548b5a319b787f10e6dc5 [2021-10-16 02:23:35,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:23:35,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:23:35,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:35,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:23:35,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:23:35,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119dcfaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35, skipping insertion in model container [2021-10-16 02:23:35,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:23:35,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:23:35,643 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_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-16 02:23:35,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:35,657 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:23:35,672 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_7fbad7b5-add8-4cfc-a689-900c1f797017/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-10-16 02:23:35,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:35,710 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:23:35,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35 WrapperNode [2021-10-16 02:23:35,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:35,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:35,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:23:35,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:23:35,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:35,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:23:35,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:23:35,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:23:35,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:23:35,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:23:35,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:23:35,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:23:35,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (1/1) ... [2021-10-16 02:23:35,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:35,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:23:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:23:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:23:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:23:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:23:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:23:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:23:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:23:36,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:23:36,236 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:23:36,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:36 BoogieIcfgContainer [2021-10-16 02:23:36,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:23:36,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:23:36,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:23:36,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:23:36,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:23:35" (1/3) ... [2021-10-16 02:23:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0d1ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:36, skipping insertion in model container [2021-10-16 02:23:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:35" (2/3) ... [2021-10-16 02:23:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0d1ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:36, skipping insertion in model container [2021-10-16 02:23:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:36" (3/3) ... [2021-10-16 02:23:36,246 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-10-16 02:23:36,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:23:36,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:23:36,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:23:36,303 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, mConcurrency=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 [2021-10-16 02:23:36,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:23:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-10-16 02:23:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:23:36,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:36,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:36,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:36,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2021-10-16 02:23:36,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:36,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931122773] [2021-10-16 02:23:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:36,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:36,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:36,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:36,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:23:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:36,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:23:36,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:36,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:36,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:36,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931122773] [2021-10-16 02:23:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931122773] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:36,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:36,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:23:36,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170132602] [2021-10-16 02:23:36,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:23:36,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:23:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:23:36,668 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-16 02:23:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:36,681 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-10-16 02:23:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:23:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-16 02:23:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:36,690 INFO L225 Difference]: With dead ends: 28 [2021-10-16 02:23:36,690 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:23:36,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:23:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:23:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:23:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-10-16 02:23:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-16 02:23:36,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2021-10-16 02:23:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:36,722 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-16 02:23:36,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-16 02:23:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-16 02:23:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:23:36,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:36,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:36,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:36,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:36,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2021-10-16 02:23:36,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:36,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380322547] [2021-10-16 02:23:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:36,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:36,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:36,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:23:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:37,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:23:37,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:37,160 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 31 treesize of output 27 [2021-10-16 02:23:37,260 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 52 treesize of output 28 [2021-10-16 02:23:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:37,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:37,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:37,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380322547] [2021-10-16 02:23:37,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380322547] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:37,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:37,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:23:37,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977822297] [2021-10-16 02:23:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:23:37,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:23:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:23:37,611 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2021-10-16 02:23:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:38,043 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-16 02:23:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:23:38,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 [2021-10-16 02:23:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:38,044 INFO L225 Difference]: With dead ends: 12 [2021-10-16 02:23:38,044 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:23:38,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 566.0ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:23:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:23:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:23:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:23:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:23:38,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-16 02:23:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:38,047 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:23:38,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2021-10-16 02:23:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:23:38,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:23:38,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:23:38,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:38,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:38,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:23:38,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:23:38,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:23:38,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:23:38,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:23:38,339 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:23:38,339 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-16 02:23:38,340 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-10-16 02:23:38,340 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-10-16 02:23:38,340 INFO L860 garLoopResultBuilder]: At program point L46(lines 31 47) the Hoare annotation is: true [2021-10-16 02:23:38,340 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-16 02:23:38,340 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:23:38,341 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:23:38,341 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:23:38,341 INFO L853 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: (and (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fabs_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-16 02:23:38,341 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-16 02:23:38,342 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-16 02:23:38,342 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2021-10-16 02:23:38,342 INFO L853 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (and (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fabs_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-16 02:23:38,342 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 44) no Hoare annotation was computed. [2021-10-16 02:23:38,347 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:23:38,358 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,360 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,361 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,362 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:23:38 BoogieIcfgContainer [2021-10-16 02:23:38,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:23:38,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:23:38,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:23:38,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:23:38,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:36" (3/4) ... [2021-10-16 02:23:38,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:23:38,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:23:38,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:23:38,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:23:38,378 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:23:38,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:23:38,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:23:38,409 INFO L168 Benchmark]: Toolchain (without parser) took 3027.31 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.8 MB in the beginning and 39.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,410 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory is still 35.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:38,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.15 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 54.8 MB in the end (delta: -22.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,412 INFO L168 Benchmark]: Boogie Preprocessor took 39.43 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 51.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:38,413 INFO L168 Benchmark]: RCFGBuilder took 432.89 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 41.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,413 INFO L168 Benchmark]: TraceAbstraction took 2123.44 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 41.8 MB in the end (delta: -855.8 kB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,414 INFO L168 Benchmark]: Witness Printer took 44.10 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 39.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:38,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory is still 35.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.15 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 32.6 MB in the beginning and 54.8 MB in the end (delta: -22.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.43 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 51.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 432.89 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 41.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2123.44 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 41.8 MB in the end (delta: -855.8 kB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 44.10 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 39.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2052.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 22.4ms, AutomataDifference: 485.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 84.5ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 17 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 566.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 40.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 38.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 26.8ms SsaConstructionTime, 76.0ms SatisfiabilityAnalysisTime, 677.0ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 200 SizeOfPredicates, 13 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2021-10-16 02:23:38,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0])) && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-10-16 02:23:38,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:23:38,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((!~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0])) && !~fp.eq~FLOAT(\result, \result)) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:23:38,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbad7b5-add8-4cfc-a689-900c1f797017/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...