./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ........................................................................................................................................................................................................................................ 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:17:37,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:37,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:37,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:37,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:37,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:37,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:37,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:37,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:37,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:37,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:37,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:37,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:37,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:37,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:37,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:37,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:37,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:37,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:37,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:37,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:37,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:37,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:37,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:37,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:37,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:37,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:37,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:37,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:37,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:37,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:37,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:37,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:37,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:37,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:37,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:37,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:37,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:37,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:37,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:37,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:37,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:17:37,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:37,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:37,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:37,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:37,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:37,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:37,411 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:37,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:37,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:17:37,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:17:37,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:17:37,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:17:37,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:37,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:17:37,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:37,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:37,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:37,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:37,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:37,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:37,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:17:37,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:17:37,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:17:37,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:17:37,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:37,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-13 00:17:37,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:37,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:37,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:37,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:37,735 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:37,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-13 00:17:37,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/23ce11235/acb1ad191e534b3b9a225c8c29982691/FLAG0b88f39bc [2021-10-13 00:17:38,361 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:38,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-13 00:17:38,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/23ce11235/acb1ad191e534b3b9a225c8c29982691/FLAG0b88f39bc [2021-10-13 00:17:38,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/23ce11235/acb1ad191e534b3b9a225c8c29982691 [2021-10-13 00:17:38,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:38,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:17:38,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:38,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:38,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:38,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:38" (1/1) ... [2021-10-13 00:17:38,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1d53c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:38, skipping insertion in model container [2021-10-13 00:17:38,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:38" (1/1) ... [2021-10-13 00:17:38,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:38,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:39,001 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-13 00:17:39,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:39,030 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:17:39,043 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-13 00:17:39,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:39,061 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:17:39,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39 WrapperNode [2021-10-13 00:17:39,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:39,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:39,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:17:39,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:17:39,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:39,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:17:39,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:17:39,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:17:39,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:17:39,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:17:39,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:17:39,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:17:39,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (1/1) ... [2021-10-13 00:17:39,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:39,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:17:39,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:17:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:17:39,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:17:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:17:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:17:39,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:17:39,427 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:17:39,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:39 BoogieIcfgContainer [2021-10-13 00:17:39,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:17:39,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:17:39,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:17:39,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:17:39,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:17:38" (1/3) ... [2021-10-13 00:17:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a45a3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:39, skipping insertion in model container [2021-10-13 00:17:39,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:39" (2/3) ... [2021-10-13 00:17:39,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a45a3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:39, skipping insertion in model container [2021-10-13 00:17:39,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:39" (3/3) ... [2021-10-13 00:17:39,438 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-13 00:17:39,443 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:17:39,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:17:39,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:17:39,517 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 [2021-10-13 00:17:39,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:17:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-10-13 00:17:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 00:17:39,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:39,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 00:17:39,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:39,548 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-13 00:17:39,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:39,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366732201] [2021-10-13 00:17:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:39,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:17:39,696 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:17:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:17:39,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:17:39,780 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:17:39,782 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:17:39,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:17:39,792 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:17:39,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:17:39 BoogieIcfgContainer [2021-10-13 00:17:39,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:17:39,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:17:39,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:17:39,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:17:39,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:39" (3/4) ... [2021-10-13 00:17:39,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:17:39,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:17:39,830 INFO L168 Benchmark]: Toolchain (without parser) took 1104.82 ms. Allocated memory is still 94.4 MB. Free memory was 53.7 MB in the beginning and 44.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:39,831 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 69.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:39,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.93 ms. Allocated memory is still 94.4 MB. Free memory was 53.4 MB in the beginning and 69.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:39,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.76 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:39,836 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 900.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:39,837 INFO L168 Benchmark]: RCFGBuilder took 299.24 ms. Allocated memory is still 94.4 MB. Free memory was 67.2 MB in the beginning and 58.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:39,842 INFO L168 Benchmark]: TraceAbstraction took 386.46 ms. Allocated memory is still 94.4 MB. Free memory was 57.9 MB in the beginning and 45.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:39,845 INFO L168 Benchmark]: Witness Printer took 5.45 ms. Allocated memory is still 94.4 MB. Free memory was 45.3 MB in the beginning and 44.7 MB in the end (delta: 544.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:39,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 69.6 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.93 ms. Allocated memory is still 94.4 MB. Free memory was 53.4 MB in the beginning and 69.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.76 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 68.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.43 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 900.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 299.24 ms. Allocated memory is still 94.4 MB. Free memory was 67.2 MB in the beginning and 58.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 386.46 ms. Allocated memory is still 94.4 MB. Free memory was 57.9 MB in the beginning and 45.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.45 ms. Allocated memory is still 94.4 MB. Free memory was 45.3 MB in the beginning and 44.7 MB in the end (delta: 544.6 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: 6]: 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 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 286.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 52.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:17:39,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/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-4e77c04 [2021-10-13 00:17:42,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:42,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:42,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:42,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:42,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:42,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:42,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:42,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:42,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:42,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:42,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:42,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:42,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:42,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:42,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:42,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:42,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:42,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:42,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:42,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:42,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:42,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:42,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:42,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:42,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:42,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:42,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:42,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:42,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:42,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:42,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:42,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:42,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:42,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:42,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:42,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:42,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:42,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:42,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:42,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:42,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:17:42,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:42,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:42,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:42,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:42,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:42,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:42,667 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:42,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:42,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:17:42,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:17:42,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:42,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:17:42,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:42,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:17:42,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:17:42,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:17:42,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:17:42,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:17:42,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:42,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:17:42,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:42,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:42,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:42,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:42,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:42,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:42,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:17:42,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:17:42,674 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:17:42,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:17:42,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:42,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:17:42,675 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-13 00:17:43,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:43,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:43,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:43,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:43,123 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:43,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-13 00:17:43,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/a0194289d/02bf5e70c4eb4e31b4fea0e5b8a971ee/FLAG0272b6091 [2021-10-13 00:17:43,681 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:43,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-13 00:17:43,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/a0194289d/02bf5e70c4eb4e31b4fea0e5b8a971ee/FLAG0272b6091 [2021-10-13 00:17:44,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/data/a0194289d/02bf5e70c4eb4e31b4fea0e5b8a971ee [2021-10-13 00:17:44,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:44,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:17:44,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:44,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:44,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:44,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b017bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44, skipping insertion in model container [2021-10-13 00:17:44,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:44,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:44,267 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-13 00:17:44,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:44,289 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:17:44,301 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_0340a9ab-aa0c-4585-ab2c-057bdeec5293/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-13 00:17:44,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:44,340 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:17:44,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44 WrapperNode [2021-10-13 00:17:44,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:44,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:44,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:17:44,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:17:44,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:44,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:17:44,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:17:44,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:17:44,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:17:44,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:17:44,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:17:44,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:17:44,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (1/1) ... [2021-10-13 00:17:44,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:44,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:17:44,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:17:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:17:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:17:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:17:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:17:44,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:17:44,953 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:17:44,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:44 BoogieIcfgContainer [2021-10-13 00:17:44,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:17:44,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:17:44,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:17:44,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:17:44,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:17:44" (1/3) ... [2021-10-13 00:17:44,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f9f735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:44, skipping insertion in model container [2021-10-13 00:17:44,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:44" (2/3) ... [2021-10-13 00:17:44,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f9f735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:44, skipping insertion in model container [2021-10-13 00:17:44,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:44" (3/3) ... [2021-10-13 00:17:44,963 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-13 00:17:44,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:17:44,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:17:45,014 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:17:45,021 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 [2021-10-13 00:17:45,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:17:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-10-13 00:17:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 00:17:45,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:45,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 00:17:45,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:17:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:45,045 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-13 00:17:45,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:17:45,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953688185] [2021-10-13 00:17:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:45,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:17:45,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:17:45,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:17:45,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:17:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:17:45,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:45,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:17:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:45,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:17:45,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953688185] [2021-10-13 00:17:45,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953688185] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:45,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:17:45,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:17:45,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663780539] [2021-10-13 00:17:45,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:17:45,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:17:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:17:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:17:45,744 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:45,906 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-13 00:17:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:17:45,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 00:17:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:45,913 INFO L225 Difference]: With dead ends: 13 [2021-10-13 00:17:45,914 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:17:45,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 308.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:17:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:17:45,937 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) [2021-10-13 00:17:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:17:45,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-13 00:17:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:45,939 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:17:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:17:45,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:17:45,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:17:45,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:46,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:17:46,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:17:46,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:46,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:46,214 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:17:46,214 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:17:46,214 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:17:46,215 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:17:46,215 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-10-13 00:17:46,215 INFO L853 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 00:17:46,215 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-13 00:17:46,216 INFO L857 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-10-13 00:17:46,216 INFO L853 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 00:17:46,220 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:17:46,228 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,232 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,233 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,233 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:17:46 BoogieIcfgContainer [2021-10-13 00:17:46,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:17:46,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:17:46,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:17:46,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:17:46,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:44" (3/4) ... [2021-10-13 00:17:46,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:17:46,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:17:46,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:17:46,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:17:46,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:17:46,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:17:46,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:17:46,308 INFO L168 Benchmark]: Toolchain (without parser) took 2220.32 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 47.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,309 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:46,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.60 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 50.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,311 INFO L168 Benchmark]: Boogie Preprocessor took 23.61 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 48.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:46,312 INFO L168 Benchmark]: RCFGBuilder took 548.13 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 39.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,313 INFO L168 Benchmark]: TraceAbstraction took 1277.76 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 31.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,313 INFO L168 Benchmark]: Witness Printer took 71.85 ms. Allocated memory is still 67.1 MB. Free memory was 31.7 MB in the beginning and 47.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:46,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.60 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 50.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.61 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 48.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 548.13 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 39.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1277.76 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 31.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.85 ms. Allocated memory is still 67.1 MB. Free memory was 31.7 MB in the beginning and 47.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 6]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1207.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.4ms, AutomataDifference: 186.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 56.1ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 308.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 35.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 14.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.7ms SsaConstructionTime, 106.5ms SatisfiabilityAnalysisTime, 495.8ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 6]: Loop Invariant [2021-10-13 00:17:46,335 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,340 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2021-10-13 00:17:46,341 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 00:17:46,342 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-13 00:17:46,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0340a9ab-aa0c-4585-ab2c-057bdeec5293/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...