./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh --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 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:04:52,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:04:52,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:04:52,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:04:52,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:04:52,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:04:52,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:04:52,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:04:52,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:04:52,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:04:52,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:04:52,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:04:52,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:04:52,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:04:52,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:04:52,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:04:52,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:04:52,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:04:52,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:04:52,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:04:52,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:04:52,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:04:52,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:04:52,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:04:52,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:04:52,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:04:52,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:04:52,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:04:52,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:04:52,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:04:52,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:04:52,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:04:52,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:04:52,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:04:52,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:04:52,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:04:52,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:04:52,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:04:52,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:04:52,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:04:52,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:04:52,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:04:52,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:04:52,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:04:52,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:04:52,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:04:52,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:04:52,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:04:52,177 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:04:52,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:04:52,178 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:04:52,178 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:04:52,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:04:52,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:04:52,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:04:52,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:04:52,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:04:52,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2022-12-14 11:04:52,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:04:52,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:04:52,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:04:52,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:04:52,371 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:04:52,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2022-12-14 11:04:54,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:04:55,095 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:04:55,096 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2022-12-14 11:04:55,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/93121b0a5/b6b046c8ea6448ab8c35d3ba432d8e08/FLAG2195677c7 [2022-12-14 11:04:55,114 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/93121b0a5/b6b046c8ea6448ab8c35d3ba432d8e08 [2022-12-14 11:04:55,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:04:55,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:04:55,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:04:55,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:04:55,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:04:55,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5862b38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55, skipping insertion in model container [2022-12-14 11:04:55,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:04:55,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:04:55,269 WARN L237 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_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2022-12-14 11:04:55,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:04:55,282 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:04:55,297 WARN L237 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_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2022-12-14 11:04:55,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:04:55,309 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:04:55,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55 WrapperNode [2022-12-14 11:04:55,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:04:55,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:04:55,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:04:55,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:04:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,336 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-12-14 11:04:55,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:04:55,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:04:55,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:04:55,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:04:55,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:04:55,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:04:55,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:04:55,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:04:55,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (1/1) ... [2022-12-14 11:04:55,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:04:55,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:04:55,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:04:55,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 11:04:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 11:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 11:04:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 11:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:04:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:04:55,509 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:04:55,510 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:04:55,575 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:04:55,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:04:55,596 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:04:55,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:04:55 BoogieIcfgContainer [2022-12-14 11:04:55,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:04:55,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:04:55,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:04:55,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:04:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:04:55" (1/3) ... [2022-12-14 11:04:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4ebe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:04:55, skipping insertion in model container [2022-12-14 11:04:55,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:55" (2/3) ... [2022-12-14 11:04:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4ebe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:04:55, skipping insertion in model container [2022-12-14 11:04:55,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:04:55" (3/3) ... [2022-12-14 11:04:55,603 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2022-12-14 11:04:55,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:04:55,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:04:55,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:04:55,656 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1eb1dba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:04:55,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:04:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:04:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:04:55,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:55,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:55,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1831614501, now seen corresponding path program 1 times [2022-12-14 11:04:55,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:55,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339785367] [2022-12-14 11:04:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:04:55,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:04:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:04:55,778 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:04:55,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:04:55,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:04:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:04:55,787 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:04:55,791 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:04:55,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:04:55 BoogieIcfgContainer [2022-12-14 11:04:55,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:04:55,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:04:55,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:04:55,814 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:04:55,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:04:55" (3/4) ... [2022-12-14 11:04:55,817 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:04:55,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:04:55,818 INFO L158 Benchmark]: Toolchain (without parser) took 699.75ms. Allocated memory is still 172.0MB. Free memory was 113.7MB in the beginning and 119.0MB in the end (delta: -5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:04:55,819 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 67.0MB in the end (delta: 91.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:04:55,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.04ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 102.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:04:55,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.12ms. Allocated memory is still 172.0MB. Free memory was 102.9MB in the beginning and 101.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:04:55,820 INFO L158 Benchmark]: Boogie Preprocessor took 47.81ms. Allocated memory is still 172.0MB. Free memory was 101.5MB in the beginning and 146.1MB in the end (delta: -44.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 11:04:55,821 INFO L158 Benchmark]: RCFGBuilder took 212.24ms. Allocated memory is still 172.0MB. Free memory was 145.6MB in the beginning and 134.8MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 11:04:55,822 INFO L158 Benchmark]: TraceAbstraction took 214.02ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 119.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:04:55,822 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 172.0MB. Free memory was 119.5MB in the beginning and 119.0MB in the end (delta: 496.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:04:55,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 67.0MB in the end (delta: 91.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.04ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 102.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.12ms. Allocated memory is still 172.0MB. Free memory was 102.9MB in the beginning and 101.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.81ms. Allocated memory is still 172.0MB. Free memory was 101.5MB in the beginning and 146.1MB in the end (delta: -44.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 212.24ms. Allocated memory is still 172.0MB. Free memory was 145.6MB in the beginning and 134.8MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 214.02ms. Allocated memory is still 172.0MB. Free memory was 134.2MB in the beginning and 119.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 172.0MB. Free memory was 119.5MB in the beginning and 119.0MB in the end (delta: 496.0kB). 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: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L42] CALL, EXPR f(IN) VAL [\old(x)=55] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) VAL [f(IN)=56, IN=55] [L42] CALL, EXPR fp(IN) VAL [\old(x)=55] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) VAL [f(IN)=56, fp(IN)=59, IN=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=60] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [f(x)=53, IN=55, x=60] [L44] CALL, EXPR fp(x) VAL [\old(x)=60] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=61, IN=55, x=60] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) VAL [f(x)=58, IN=55, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) VAL [f(x)=58, fp(x)=57, IN=55, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=55] [L51] reach_error() VAL [IN=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 11:04:55,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh --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 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:04:57,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:04:57,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:04:57,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:04:57,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:04:57,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:04:57,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:04:57,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:04:57,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:04:57,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:04:57,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:04:57,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:04:57,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:04:57,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:04:57,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:04:57,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:04:57,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:04:57,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:04:57,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:04:57,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:04:57,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:04:57,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:04:57,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:04:57,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:04:57,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:04:57,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:04:57,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:04:57,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:04:57,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:04:57,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:04:57,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:04:57,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:04:57,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:04:57,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:04:57,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:04:57,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:04:57,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:04:57,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:04:57,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:04:57,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:04:57,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:04:57,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 11:04:57,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:04:57,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:04:57,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:04:57,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:04:57,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:04:57,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:04:57,798 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:04:57,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:04:57,799 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:04:57,799 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:04:57,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:04:57,799 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:04:57,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:04:57,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:04:57,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:04:57,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:04:57,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:04:57,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:04:57,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:04:57,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:04:57,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:04:57,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:04:57,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:04:57,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:04:57,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:04:57,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:04:57,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:04:57,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:04:57,803 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:04:57,803 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:04:57,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:04:57,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:04:57,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:04:57,804 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_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2022-12-14 11:04:58,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:04:58,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:04:58,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:04:58,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:04:58,087 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:04:58,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2022-12-14 11:05:00,740 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:05:00,894 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:05:00,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2022-12-14 11:05:00,900 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/418b0a84b/aa2053f0de094525a188d9bbf5b9737f/FLAG0936f29eb [2022-12-14 11:05:00,911 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/data/418b0a84b/aa2053f0de094525a188d9bbf5b9737f [2022-12-14 11:05:00,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:05:00,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:05:00,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:05:00,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:05:00,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:05:00,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:05:00" (1/1) ... [2022-12-14 11:05:00,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eaf99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:00, skipping insertion in model container [2022-12-14 11:05:00,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:05:00" (1/1) ... [2022-12-14 11:05:00,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:05:00,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:05:01,044 WARN L237 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_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2022-12-14 11:05:01,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:05:01,056 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:05:01,069 WARN L237 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_d8bc31fa-0382-47fa-b13f-818a313b3d9d/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2022-12-14 11:05:01,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:05:01,081 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:05:01,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01 WrapperNode [2022-12-14 11:05:01,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:05:01,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:05:01,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:05:01,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:05:01,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,106 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-14 11:05:01,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:05:01,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:05:01,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:05:01,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:05:01,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:05:01,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:05:01,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:05:01,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:05:01,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (1/1) ... [2022-12-14 11:05:01,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:05:01,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:05:01,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:05:01,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:05:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:05:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 11:05:01,191 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 11:05:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:05:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 11:05:01,191 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 11:05:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:05:01,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:05:01,249 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:05:01,250 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:05:09,768 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:05:09,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:05:09,775 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:05:09,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:05:09 BoogieIcfgContainer [2022-12-14 11:05:09,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:05:09,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:05:09,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:05:09,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:05:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:05:00" (1/3) ... [2022-12-14 11:05:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b383a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:05:09, skipping insertion in model container [2022-12-14 11:05:09,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:05:01" (2/3) ... [2022-12-14 11:05:09,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b383a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:05:09, skipping insertion in model container [2022-12-14 11:05:09,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:05:09" (3/3) ... [2022-12-14 11:05:09,788 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2022-12-14 11:05:09,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:05:09,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:05:09,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:05:09,848 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@87d5a3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:05:09,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:05:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:05:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 11:05:09,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:09,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:09,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:05:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-12-14 11:05:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:05:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036362056] [2022-12-14 11:05:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:05:09,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:05:09,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:05:09,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:05:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:05:12,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:05:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:05:12,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:05:12,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:05:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036362056] [2022-12-14 11:05:12,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036362056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:05:12,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:05:12,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:05:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243348889] [2022-12-14 11:05:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:05:12,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:05:12,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:05:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:05:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:05:12,992 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 11:05:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:13,007 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-12-14 11:05:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:05:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-12-14 11:05:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:13,015 INFO L225 Difference]: With dead ends: 49 [2022-12-14 11:05:13,015 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 11:05:13,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:05:13,023 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2022-12-14 11:05:13,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:05:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 11:05:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 11:05:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 11:05:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 11:05:13,056 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-12-14 11:05:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:13,056 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 11:05:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 11:05:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 11:05:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 11:05:13,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:13,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:13,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:05:13,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:05:13,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:05:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-12-14 11:05:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:05:13,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52835991] [2022-12-14 11:05:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:05:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:05:13,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:05:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8bc31fa-0382-47fa-b13f-818a313b3d9d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process