./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:26:21,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:26:21,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:26:21,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:26:21,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:26:21,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:26:21,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:26:21,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:26:21,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:26:21,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:26:21,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:26:21,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:26:21,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:26:21,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:26:21,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:26:21,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:26:21,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:26:21,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:26:21,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:26:21,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:26:21,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:26:21,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:26:21,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:26:21,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:26:21,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:26:21,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:26:21,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:26:21,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:26:21,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:26:21,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:26:21,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:26:21,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:26:21,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:26:21,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:26:21,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:26:21,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:26:21,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:26:21,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:26:21,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:26:21,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:26:21,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:26:21,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:26:21,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:26:21,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:26:21,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:26:21,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:26:21,514 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:26:21,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:26:21,515 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:26:21,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:26:21,515 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:26:21,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:26:21,516 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:26:21,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:26:21,517 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:26:21,517 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:26:21,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:26:21,517 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:26:21,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:26:21,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:26:21,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:26:21,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:26:21,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:26:21,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:26:21,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:26:21,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:26:21,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:26:21,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:26:21,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:26:21,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:26:21,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:26:21,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:26:21,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:26:21,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:21,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:26:21,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:26:21,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:26:21,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:26:21,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:26:21,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:26:21,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:26:21,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:26:21,525 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-11-12 23:26:21,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:26:21,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:26:21,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:26:21,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:26:21,905 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:26:21,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-12 23:26:21,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/ae575d09a/f8292985e04f4163a40eaece769431c5/FLAG801341886 [2021-11-12 23:26:22,510 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:22,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-12 23:26:22,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/ae575d09a/f8292985e04f4163a40eaece769431c5/FLAG801341886 [2021-11-12 23:26:22,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/ae575d09a/f8292985e04f4163a40eaece769431c5 [2021-11-12 23:26:22,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:22,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:22,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:22,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:22,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:22,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:22" (1/1) ... [2021-11-12 23:26:22,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b52143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:22, skipping insertion in model container [2021-11-12 23:26:22,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:22" (1/1) ... [2021-11-12 23:26:22,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:22,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:23,092 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-12 23:26:23,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:23,103 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:26:23,124 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-12 23:26:23,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:23,139 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:26:23,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23 WrapperNode [2021-11-12 23:26:23,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:23,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:23,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:26:23,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:26:23,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:23,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:26:23,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:26:23,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:26:23,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:26:23,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:26:23,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:26:23,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:26:23,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (1/1) ... [2021-11-12 23:26:23,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:23,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:26:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:26:23,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:26:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-12 23:26:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-12 23:26:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:26:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 23:26:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:26:23,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:26:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:26:23,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:26:23,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:26:23,675 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:26:23,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:23 BoogieIcfgContainer [2021-11-12 23:26:23,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:26:23,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:26:23,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:26:23,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:26:23,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:26:22" (1/3) ... [2021-11-12 23:26:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a1ed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:23, skipping insertion in model container [2021-11-12 23:26:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:23" (2/3) ... [2021-11-12 23:26:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a1ed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:23, skipping insertion in model container [2021-11-12 23:26:23,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:23" (3/3) ... [2021-11-12 23:26:23,686 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-11-12 23:26:23,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:26:23,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:26:23,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:26:23,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:26:23,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:26:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:26:23,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:23,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:23,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1260003311, now seen corresponding path program 1 times [2021-11-12 23:26:23,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:23,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279930513] [2021-11-12 23:26:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:23,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:24,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:26:24,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279930513] [2021-11-12 23:26:24,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279930513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:24,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:26:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065440801] [2021-11-12 23:26:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:24,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:26:24,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:26:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:26:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:26:24,090 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:26:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:24,140 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2021-11-12 23:26:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:26:24,143 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-12 23:26:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:24,150 INFO L225 Difference]: With dead ends: 32 [2021-11-12 23:26:24,150 INFO L226 Difference]: Without dead ends: 15 [2021-11-12 23:26:24,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:26:24,160 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:24,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 22.17ms Time] [2021-11-12 23:26:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-12 23:26:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-12 23:26:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-12 23:26:24,214 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-11-12 23:26:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:24,215 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-12 23:26:24,215 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:26:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-12 23:26:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:26:24,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:24,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:24,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:26:24,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:24,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1572527946, now seen corresponding path program 1 times [2021-11-12 23:26:24,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:26:24,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983312943] [2021-11-12 23:26:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:24,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:26:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:24,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:26:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:26:24,435 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:26:24,436 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:26:24,438 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:26:24,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:26:24,445 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:26:24,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:26:24,464 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:26:24,468 INFO L158 Benchmark]: Toolchain (without parser) took 1604.40ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 62.0MB in the beginning and 78.1MB in the end (delta: -16.1MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2021-11-12 23:26:24,468 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:24,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.30ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 90.9MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:26:24,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.52ms. Allocated memory is still 115.3MB. Free memory was 90.9MB in the beginning and 89.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:24,471 INFO L158 Benchmark]: Boogie Preprocessor took 27.46ms. Allocated memory is still 115.3MB. Free memory was 89.1MB in the beginning and 88.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:24,471 INFO L158 Benchmark]: RCFGBuilder took 472.86ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 73.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:26:24,472 INFO L158 Benchmark]: TraceAbstraction took 787.09ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 78.1MB in the end (delta: -5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:24,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.30ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 90.9MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.52ms. Allocated memory is still 115.3MB. Free memory was 90.9MB in the beginning and 89.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.46ms. Allocated memory is still 115.3MB. Free memory was 89.1MB in the beginning and 88.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 472.86ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 73.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 787.09ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 78.1MB in the end (delta: -5.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:26:24,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:26:27,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:26:27,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:26:27,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:26:27,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:26:27,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:26:27,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:26:27,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:26:27,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:26:27,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:26:27,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:26:27,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:26:27,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:26:27,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:26:27,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:26:27,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:26:27,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:26:27,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:26:27,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:26:27,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:26:27,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:26:27,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:26:27,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:26:27,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:26:27,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:26:27,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:26:27,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:26:27,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:26:27,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:26:27,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:26:27,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:26:27,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:26:27,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:26:27,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:26:27,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:26:27,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:26:27,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:26:27,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:26:27,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:26:27,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:26:27,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:26:27,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:26:27,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:26:27,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:26:27,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:26:27,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:26:27,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:26:27,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:26:27,227 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:26:27,227 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:26:27,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:26:27,228 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:26:27,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:26:27,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:26:27,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:26:27,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:26:27,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:26:27,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:26:27,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:26:27,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:26:27,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:26:27,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:26:27,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:26:27,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:26:27,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:26:27,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:26:27,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:26:27,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:26:27,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:26:27,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:27,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:26:27,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:26:27,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:26:27,235 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:26:27,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:27,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:26:27,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:26:27,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:26:27,237 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-11-12 23:26:27,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:26:27,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:26:27,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:26:27,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:26:27,618 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:26:27,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-12 23:26:27,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/10fcb90dc/dd6b68fb69064853bdf4461488a13602/FLAGcdcc53ffb [2021-11-12 23:26:28,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:28,172 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-12 23:26:28,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/10fcb90dc/dd6b68fb69064853bdf4461488a13602/FLAGcdcc53ffb [2021-11-12 23:26:28,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/data/10fcb90dc/dd6b68fb69064853bdf4461488a13602 [2021-11-12 23:26:28,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:28,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:28,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:28,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:28,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:28,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117ab7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28, skipping insertion in model container [2021-11-12 23:26:28,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:28,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:28,768 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-12 23:26:28,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:28,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:26:28,839 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_e8ee0d32-d155-45ec-8a02-7c881a265db0/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-12 23:26:28,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:28,885 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:26:28,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28 WrapperNode [2021-11-12 23:26:28,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:28,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:28,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:26:28,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:26:28,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:28,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:26:28,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:26:28,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:26:28,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:28,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:29,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:29,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:26:29,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:26:29,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:26:29,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:26:29,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (1/1) ... [2021-11-12 23:26:29,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:29,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:29,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:26:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:26:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:26:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-12 23:26:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-12 23:26:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:26:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:26:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:26:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:26:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-12 23:26:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:26:29,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:26:29,454 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:26:29,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:29 BoogieIcfgContainer [2021-11-12 23:26:29,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:26:29,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:26:29,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:26:29,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:26:29,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:26:28" (1/3) ... [2021-11-12 23:26:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66518bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:29, skipping insertion in model container [2021-11-12 23:26:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:28" (2/3) ... [2021-11-12 23:26:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66518bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:29, skipping insertion in model container [2021-11-12 23:26:29,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:29" (3/3) ... [2021-11-12 23:26:29,465 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-11-12 23:26:29,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:26:29,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:26:29,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:26:29,546 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:26:29,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:26:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:26:29,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:29,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:29,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2048951326, now seen corresponding path program 1 times [2021-11-12 23:26:29,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:29,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999771682] [2021-11-12 23:26:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:29,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:29,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:29,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:29,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:26:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:29,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:26:29,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:29,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:29,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:29,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999771682] [2021-11-12 23:26:29,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999771682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:29,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:29,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:26:29,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480957845] [2021-11-12 23:26:29,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:29,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:26:29,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:26:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:26:29,975 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:26:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:30,004 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2021-11-12 23:26:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:26:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-12 23:26:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:30,016 INFO L225 Difference]: With dead ends: 47 [2021-11-12 23:26:30,016 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 23:26:30,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:26:30,027 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:30,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:26:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 23:26:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-12 23:26:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-12 23:26:30,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2021-11-12 23:26:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:30,082 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-12 23:26:30,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:26:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-12 23:26:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:26:30,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:30,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:30,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:30,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:30,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1561923165, now seen corresponding path program 1 times [2021-11-12 23:26:30,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:30,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335789480] [2021-11-12 23:26:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:30,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:30,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:30,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:26:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:30,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:30,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:30,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:30,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:30,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335789480] [2021-11-12 23:26:30,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335789480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:30,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:30,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:26:30,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133623583] [2021-11-12 23:26:30,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:30,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:30,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:30,511 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:26:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:30,568 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-12 23:26:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-12 23:26:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:30,571 INFO L225 Difference]: With dead ends: 33 [2021-11-12 23:26:30,571 INFO L226 Difference]: Without dead ends: 28 [2021-11-12 23:26:30,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:30,574 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:30,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 16 Unknown, 0 Unchecked, 5.38ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.42ms Time] [2021-11-12 23:26:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-12 23:26:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-12 23:26:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-12 23:26:30,586 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-12 23:26:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:30,587 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-12 23:26:30,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:26:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-12 23:26:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:26:30,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:30,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:30,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:30,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:30,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1417426806, now seen corresponding path program 1 times [2021-11-12 23:26:30,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:30,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756208431] [2021-11-12 23:26:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:30,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:30,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:30,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:26:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:26:30,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:31,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:31,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:31,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756208431] [2021-11-12 23:26:31,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756208431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:31,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:31,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:26:31,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271373895] [2021-11-12 23:26:31,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:26:31,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:26:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:26:31,290 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:31,422 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-12 23:26:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-12 23:26:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:31,426 INFO L225 Difference]: With dead ends: 34 [2021-11-12 23:26:31,426 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:26:31,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:26:31,428 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 53.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:31,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 1 Unchecked, 53.01ms Time] [2021-11-12 23:26:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:26:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-12 23:26:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-12 23:26:31,441 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2021-11-12 23:26:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:31,441 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-12 23:26:31,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:26:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-12 23:26:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:26:31,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:31,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:31,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:26:31,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:31,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 642927512, now seen corresponding path program 1 times [2021-11-12 23:26:31,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:31,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159448904] [2021-11-12 23:26:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:31,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:31,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:31,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:26:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:31,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:31,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:26:31,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:26:31,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:31,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159448904] [2021-11-12 23:26:31,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159448904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:31,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:31,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:26:31,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557119956] [2021-11-12 23:26:31,929 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:31,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:31,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:31,930 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:26:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:31,979 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-12 23:26:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-12 23:26:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:31,981 INFO L225 Difference]: With dead ends: 33 [2021-11-12 23:26:31,981 INFO L226 Difference]: Without dead ends: 28 [2021-11-12 23:26:31,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:31,983 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:31,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 18 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 42.42ms Time] [2021-11-12 23:26:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-12 23:26:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-12 23:26:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-11-12 23:26:31,991 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 22 [2021-11-12 23:26:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:31,991 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-11-12 23:26:31,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:26:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-12 23:26:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:26:31,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:31,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:32,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:26:32,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:32,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:32,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1034693180, now seen corresponding path program 1 times [2021-11-12 23:26:32,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:32,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809807621] [2021-11-12 23:26:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:32,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:32,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:32,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:26:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:26:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:26:32,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:26:32,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:32,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809807621] [2021-11-12 23:26:32,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809807621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:32,727 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:32,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 23:26:32,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126513686] [2021-11-12 23:26:32,728 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:32,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:26:32,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:26:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:26:32,730 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:32,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:32,900 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-12 23:26:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:26:32,901 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-12 23:26:32,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:32,902 INFO L225 Difference]: With dead ends: 30 [2021-11-12 23:26:32,902 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 23:26:32,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:26:32,904 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 53.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:32,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 27 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 3 Unchecked, 53.99ms Time] [2021-11-12 23:26:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 23:26:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-12 23:26:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 23:26:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-12 23:26:32,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2021-11-12 23:26:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-12 23:26:32,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-12 23:26:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 23:26:32,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:32,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:32,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:33,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:33,138 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:33,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1550253923, now seen corresponding path program 1 times [2021-11-12 23:26:33,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:33,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066616579] [2021-11-12 23:26:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:33,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:33,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:33,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:26:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:33,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:26:33,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:26:33,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:26:33,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:33,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066616579] [2021-11-12 23:26:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066616579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:33,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:33,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:26:33,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819810640] [2021-11-12 23:26:33,519 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:33,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:26:33,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:26:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:26:33,520 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:33,738 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-12 23:26:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:33,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-12 23:26:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:33,739 INFO L225 Difference]: With dead ends: 22 [2021-11-12 23:26:33,739 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:26:33,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:26:33,741 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 143.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:33,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 10 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 3 Unchecked, 143.04ms Time] [2021-11-12 23:26:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:26:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:26:33,742 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) [2021-11-12 23:26:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:26:33,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-12 23:26:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:33,743 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:26:33,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:26:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:26:33,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:26:33,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:26:33,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:26:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:33,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:26:34,013 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:26:34,013 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2021-11-12 23:26:34,013 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-12 23:26:34,013 INFO L858 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-11-12 23:26:34,014 INFO L854 garLoopResultBuilder]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_fmax_float_#res#1|))) [2021-11-12 23:26:34,014 INFO L861 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2021-11-12 23:26:34,014 INFO L858 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2021-11-12 23:26:34,014 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 23:26:34,014 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:26:34,015 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 23:26:34,015 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2021-11-12 23:26:34,015 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) [2021-11-12 23:26:34,015 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2021-11-12 23:26:34,015 INFO L854 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2021-11-12 23:26:34,016 INFO L858 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-11-12 23:26:34,017 INFO L861 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: true [2021-11-12 23:26:34,017 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2021-11-12 23:26:34,017 INFO L861 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2021-11-12 23:26:34,017 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2021-11-12 23:26:34,017 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2021-11-12 23:26:34,020 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-12 23:26:34,021 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:26:34,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:26:34 BoogieIcfgContainer [2021-11-12 23:26:34,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:26:34,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:26:34,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:26:34,034 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:26:34,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:29" (3/4) ... [2021-11-12 23:26:34,038 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:26:34,044 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2021-11-12 23:26:34,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-12 23:26:34,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-12 23:26:34,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 23:26:34,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:26:34,076 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(\result, \result) [2021-11-12 23:26:34,076 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-12 23:26:34,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:26:34,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:26:34,089 INFO L158 Benchmark]: Toolchain (without parser) took 5547.13ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.4MB in the beginning and 29.2MB in the end (delta: 14.3MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,089 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:34,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.67ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 47.4MB in the end (delta: -4.2MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.02ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,090 INFO L158 Benchmark]: Boogie Preprocessor took 63.24ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 44.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:34,091 INFO L158 Benchmark]: RCFGBuilder took 441.84ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 33.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,091 INFO L158 Benchmark]: TraceAbstraction took 4575.46ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 32.6MB in the beginning and 32.4MB in the end (delta: 146.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,092 INFO L158 Benchmark]: Witness Printer took 54.13ms. Allocated memory is still 77.6MB. Free memory was 32.4MB in the beginning and 29.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:26:34,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.67ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 47.4MB in the end (delta: -4.2MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.02ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.24ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 44.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 441.84ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 33.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4575.46ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 32.6MB in the beginning and 32.4MB in the end (delta: 146.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Witness Printer took 54.13ms. Allocated memory is still 77.6MB. Free memory was 32.4MB in the beginning and 29.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 67]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 331.88ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 644 SdHoareTripleChecker+Invalid, 307.71ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 154 mSDtfsCounter, 79 mSolverCounterSat, 14.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 21 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 218 ConstructedInterpolants, 15 QuantifiedInterpolants, 413 SizeOfPredicates, 30 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 36/36 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: 56]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 23:26:34,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ee0d32-d155-45ec-8a02-7c881a265db0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE