./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V --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 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:19:50,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:19:50,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:19:50,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:19:50,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:19:50,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:19:50,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:19:50,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:19:50,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:19:50,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:19:50,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:19:50,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:19:50,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:19:50,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:19:50,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:19:50,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:19:50,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:19:50,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:19:50,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:19:50,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:19:50,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:19:50,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:19:50,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:19:50,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:19:50,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:19:50,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:19:50,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:19:50,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:19:50,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:19:50,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:19:50,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:19:50,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:19:50,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:19:50,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:19:50,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:19:50,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:19:50,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:19:50,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:19:50,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:19:50,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:19:50,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:19:50,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:19:50,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:19:50,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:19:50,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:19:50,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:19:50,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:19:50,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:19:50,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:19:50,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:19:50,205 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:19:50,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:19:50,206 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:19:50,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:19:50,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:19:50,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:19:50,207 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:19:50,207 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:19:50,208 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:19:50,208 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:19:50,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:19:50,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:19:50,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:19:50,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:19:50,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:19:50,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:19:50,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:19:50,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:19:50,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:19:50,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:19:50,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:19:50,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:19:50,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:19:50,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:19:50,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:50,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:19:50,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:19:50,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:19:50,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:19:50,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:19:50,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:19:50,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:19:50,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:19:50,216 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_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 [2021-11-23 02:19:50,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:19:50,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:19:50,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:19:50,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:19:50,512 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:19:50,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-11-23 02:19:50,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/fa854c198/0143ac7db5994ecd83d88306e49d562b/FLAGdbfcad1ab [2021-11-23 02:19:51,053 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:19:51,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-11-23 02:19:51,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/fa854c198/0143ac7db5994ecd83d88306e49d562b/FLAGdbfcad1ab [2021-11-23 02:19:51,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/fa854c198/0143ac7db5994ecd83d88306e49d562b [2021-11-23 02:19:51,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:19:51,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:19:51,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:51,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:19:51,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:19:51,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:51,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484fb77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51, skipping insertion in model container [2021-11-23 02:19:51,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:51,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:19:51,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:19:51,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-11-23 02:19:51,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:51,855 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:19:51,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-11-23 02:19:51,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:51,931 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:19:51,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51 WrapperNode [2021-11-23 02:19:51,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:51,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:51,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:19:51,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:19:51,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:51,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:51,993 INFO L137 Inliner]: procedures = 19, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 227 [2021-11-23 02:19:51,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:51,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:19:51,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:19:51,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:19:52,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:19:52,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:19:52,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:19:52,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:19:52,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (1/1) ... [2021-11-23 02:19:52,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:52,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:19:52,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:19:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:19:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:19:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:19:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 02:19:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:19:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-11-23 02:19:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-11-23 02:19:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 02:19:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-11-23 02:19:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-11-23 02:19:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:19:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:19:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:19:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-23 02:19:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:19:52,248 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:19:52,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:19:52,633 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:19:52,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:19:52,755 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-23 02:19:52,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:52 BoogieIcfgContainer [2021-11-23 02:19:52,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:19:52,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:19:52,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:19:52,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:19:52,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:51" (1/3) ... [2021-11-23 02:19:52,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dfe017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:52, skipping insertion in model container [2021-11-23 02:19:52,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:51" (2/3) ... [2021-11-23 02:19:52,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dfe017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:52, skipping insertion in model container [2021-11-23 02:19:52,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:52" (3/3) ... [2021-11-23 02:19:52,768 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2021-11-23 02:19:52,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:19:52,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:19:52,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:19:52,845 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 [2021-11-23 02:19:52,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:19:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:19:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:19:52,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:52,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:52,869 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -335795953, now seen corresponding path program 1 times [2021-11-23 02:19:52,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:52,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527256273] [2021-11-23 02:19:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:52,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:19:53,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:19:53,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527256273] [2021-11-23 02:19:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527256273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:19:53,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:19:53,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:19:53,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986183987] [2021-11-23 02:19:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:53,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:19:53,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:19:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:19:53,144 INFO L87 Difference]: Start difference. First operand has 72 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:19:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:53,243 INFO L93 Difference]: Finished difference Result 142 states and 235 transitions. [2021-11-23 02:19:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:19:53,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:19:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:53,263 INFO L225 Difference]: With dead ends: 142 [2021-11-23 02:19:53,263 INFO L226 Difference]: Without dead ends: 69 [2021-11-23 02:19:53,269 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 [2021-11-23 02:19:53,273 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:53,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:19:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-23 02:19:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-23 02:19:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:19:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2021-11-23 02:19:53,345 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 10 [2021-11-23 02:19:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:53,346 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2021-11-23 02:19:53,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:19:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2021-11-23 02:19:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:19:53,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:53,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:53,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:19:53,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -548463592, now seen corresponding path program 1 times [2021-11-23 02:19:53,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:53,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353071584] [2021-11-23 02:19:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:53,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:53,475 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:19:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:19:53,595 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:19:53,596 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:19:53,597 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:19:53,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:19:53,609 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:19:53,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:19:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:19:53 BoogieIcfgContainer [2021-11-23 02:19:53,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:19:53,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:19:53,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:19:53,681 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:19:53,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:52" (3/4) ... [2021-11-23 02:19:53,687 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:19:53,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:19:53,690 INFO L158 Benchmark]: Toolchain (without parser) took 2112.95ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 65.0MB in the beginning and 77.4MB in the end (delta: -12.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-11-23 02:19:53,693 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:53,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.74ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 76.6MB in the end (delta: -11.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:19:53,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.01ms. Allocated memory is still 107.0MB. Free memory was 76.6MB in the beginning and 74.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:19:53,700 INFO L158 Benchmark]: Boogie Preprocessor took 62.80ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 71.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:19:53,701 INFO L158 Benchmark]: RCFGBuilder took 700.05ms. Allocated memory is still 107.0MB. Free memory was 71.9MB in the beginning and 46.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 02:19:53,702 INFO L158 Benchmark]: TraceAbstraction took 921.03ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 46.1MB in the beginning and 78.2MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:53,702 INFO L158 Benchmark]: Witness Printer took 6.97ms. Allocated memory is still 130.0MB. Free memory was 78.2MB in the beginning and 77.4MB in the end (delta: 799.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:19:53,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.74ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 76.6MB in the end (delta: -11.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.01ms. Allocated memory is still 107.0MB. Free memory was 76.6MB in the beginning and 74.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.80ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 71.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 700.05ms. Allocated memory is still 107.0MB. Free memory was 71.9MB in the beginning and 46.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 921.03ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 46.1MB in the beginning and 78.2MB in the end (delta: -32.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.97ms. Allocated memory is still 130.0MB. Free memory was 78.2MB in the beginning and 77.4MB in the end (delta: 799.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 260. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L252] double x = __VERIFIER_nondet_double(); [L253] double y = -0.0; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L255] COND TRUE x < 0.0 [L257] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] [L257] RET, EXPR __ieee754_atan2(y, x) [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != -pi VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] [L261] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 87 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:19:53,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/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_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V --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 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:19:56,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:19:56,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:19:56,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:19:56,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:19:56,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:19:56,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:19:56,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:19:56,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:19:56,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:19:56,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:19:56,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:19:56,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:19:56,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:19:56,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:19:56,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:19:56,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:19:56,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:19:56,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:19:56,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:19:56,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:19:56,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:19:56,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:19:56,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:19:56,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:19:56,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:19:56,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:19:56,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:19:56,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:19:56,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:19:56,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:19:56,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:19:56,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:19:56,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:19:56,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:19:56,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:19:56,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:19:56,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:19:56,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:19:56,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:19:56,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:19:56,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:19:56,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:19:56,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:19:56,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:19:56,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:19:56,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:19:56,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:19:56,439 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:19:56,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:19:56,439 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:19:56,440 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:19:56,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:19:56,441 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:19:56,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:19:56,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:19:56,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:19:56,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:19:56,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:19:56,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:19:56,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:19:56,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:19:56,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:19:56,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:19:56,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:19:56,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:19:56,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:19:56,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:19:56,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:19:56,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:19:56,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:19:56,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:56,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:19:56,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:19:56,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:19:56,448 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:19:56,448 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:19:56,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:19:56,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:19:56,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:19:56,449 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_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 [2021-11-23 02:19:56,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:19:56,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:19:56,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:19:56,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:19:56,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:19:56,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-11-23 02:19:56,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/eb05bdc59/7057fca9eb2b47dfb8cd4611303d77f9/FLAG46a463d7a [2021-11-23 02:19:57,496 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:19:57,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-11-23 02:19:57,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/eb05bdc59/7057fca9eb2b47dfb8cd4611303d77f9/FLAG46a463d7a [2021-11-23 02:19:57,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/data/eb05bdc59/7057fca9eb2b47dfb8cd4611303d77f9 [2021-11-23 02:19:57,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:19:57,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:19:57,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:57,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:19:57,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:19:57,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:57" (1/1) ... [2021-11-23 02:19:57,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0c6550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:57, skipping insertion in model container [2021-11-23 02:19:57,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:57" (1/1) ... [2021-11-23 02:19:57,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:19:57,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:19:58,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-11-23 02:19:58,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:58,192 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:19:58,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-11-23 02:19:58,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:19:58,289 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:19:58,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58 WrapperNode [2021-11-23 02:19:58,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:19:58,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:58,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:19:58,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:19:58,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,356 INFO L137 Inliner]: procedures = 22, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 228 [2021-11-23 02:19:58,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:19:58,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:19:58,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:19:58,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:19:58,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:19:58,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:19:58,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:19:58,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:19:58,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (1/1) ... [2021-11-23 02:19:58,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:19:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:58,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:19:58,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:19:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:19:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-11-23 02:19:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-23 02:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-11-23 02:19:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-11-23 02:19:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:19:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:19:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:19:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:19:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:19:58,691 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:19:58,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:20:20,873 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:20:20,880 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:20:20,881 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-23 02:20:20,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:20:20 BoogieIcfgContainer [2021-11-23 02:20:20,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:20:20,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:20:20,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:20:20,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:20:20,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:57" (1/3) ... [2021-11-23 02:20:20,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ce369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:20:20, skipping insertion in model container [2021-11-23 02:20:20,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:58" (2/3) ... [2021-11-23 02:20:20,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ce369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:20:20, skipping insertion in model container [2021-11-23 02:20:20,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:20:20" (3/3) ... [2021-11-23 02:20:20,891 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2021-11-23 02:20:20,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:20:20,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:20:20,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:20:20,965 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 [2021-11-23 02:20:20,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:20:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 86 states have (on average 1.6627906976744187) internal successors, (143), 87 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:20:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:20:20,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:20,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:20,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2113749773, now seen corresponding path program 1 times [2021-11-23 02:20:21,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:20:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187219751] [2021-11-23 02:20:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:21,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:20:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:20:21,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:20:21,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:20:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:21,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:20:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:20:21,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:20:21,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:20:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187219751] [2021-11-23 02:20:21,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187219751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:21,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:20:21,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:20:21,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556021597] [2021-11-23 02:20:21,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:21,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:20:21,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:20:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:20:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:20:21,802 INFO L87 Difference]: Start difference. First operand has 94 states, 86 states have (on average 1.6627906976744187) internal successors, (143), 87 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:20:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:21,834 INFO L93 Difference]: Finished difference Result 185 states and 302 transitions. [2021-11-23 02:20:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:20:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:20:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:21,845 INFO L225 Difference]: With dead ends: 185 [2021-11-23 02:20:21,845 INFO L226 Difference]: Without dead ends: 90 [2021-11-23 02:20:21,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:20:21,853 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:21,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:20:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-23 02:20:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-23 02:20:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:20:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 129 transitions. [2021-11-23 02:20:21,898 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 129 transitions. Word has length 11 [2021-11-23 02:20:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:21,898 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 129 transitions. [2021-11-23 02:20:21,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:20:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 129 transitions. [2021-11-23 02:20:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:20:21,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:21,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:21,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:20:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:20:22,118 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash -177099114, now seen corresponding path program 1 times [2021-11-23 02:20:22,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:20:22,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252720733] [2021-11-23 02:20:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:22,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:20:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:20:22,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:20:22,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e70eb8-cca6-4e1a-a1b7-eeed31fb6f65/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:20:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:22,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:20:22,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:23,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2021-11-23 02:20:25,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:20:25,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-11-23 02:20:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:20:26,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:49,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70