./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be24fa7a3167c41dea480b89f4e22d6330a822b0fa562709df8f2f802f91c557 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:25:56,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:25:56,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:25:56,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:25:56,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:25:56,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:25:56,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:25:56,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:25:56,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:25:56,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:25:56,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:25:56,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:25:56,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:25:56,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:25:56,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:25:56,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:25:56,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:25:56,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:25:56,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:25:56,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:25:56,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:25:56,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:25:56,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:25:56,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:25:56,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:25:56,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:25:56,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:25:56,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:25:56,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:25:56,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:25:56,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:25:56,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:25:56,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:25:56,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:25:56,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:25:56,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:25:56,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:25:56,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:25:56,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:25:56,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:25:56,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:25:56,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:25:56,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:25:56,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:25:56,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:25:56,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:25:56,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:25:56,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:25:56,292 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:25:56,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:25:56,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:25:56,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:25:56,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:25:56,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:25:56,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:25:56,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:25:56,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:25:56,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:25:56,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:25:56,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:25:56,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:25:56,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:25:56,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:25:56,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:25:56,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:25:56,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:25:56,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:25:56,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:25:56,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:25:56,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:25:56,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:25:56,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:25:56,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:25:56,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:25:56,298 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_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be24fa7a3167c41dea480b89f4e22d6330a822b0fa562709df8f2f802f91c557 [2021-11-07 07:25:56,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:25:56,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:25:56,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:25:56,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:25:56,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:25:56,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-11-07 07:25:56,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/655b638c6/b7fc7bf8a02946ae867773abb54f80e3/FLAG6ff4f49d6 [2021-11-07 07:25:57,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:25:57,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-11-07 07:25:57,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/655b638c6/b7fc7bf8a02946ae867773abb54f80e3/FLAG6ff4f49d6 [2021-11-07 07:25:57,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/655b638c6/b7fc7bf8a02946ae867773abb54f80e3 [2021-11-07 07:25:57,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:25:57,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:25:57,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:25:57,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:25:57,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:25:57,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e66d374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57, skipping insertion in model container [2021-11-07 07:25:57,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:25:57,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:25:57,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-11-07 07:25:57,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:25:57,778 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:25:57,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-11-07 07:25:57,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:25:57,817 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:25:57,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57 WrapperNode [2021-11-07 07:25:57,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:25:57,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:25:57,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:25:57,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:25:57,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:25:57,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:25:57,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:25:57,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:25:57,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:25:57,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:25:57,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:25:57,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:25:57,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (1/1) ... [2021-11-07 07:25:57,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:25:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:57,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:25:57,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:25:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:25:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:25:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:25:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:25:58,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:25:58,164 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 07:25:58,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:25:58 BoogieIcfgContainer [2021-11-07 07:25:58,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:25:58,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:25:58,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:25:58,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:25:58,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:25:57" (1/3) ... [2021-11-07 07:25:58,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459851b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:25:58, skipping insertion in model container [2021-11-07 07:25:58,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:57" (2/3) ... [2021-11-07 07:25:58,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459851b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:25:58, skipping insertion in model container [2021-11-07 07:25:58,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:25:58" (3/3) ... [2021-11-07 07:25:58,175 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2021-11-07 07:25:58,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:25:58,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 07:25:58,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:25:58,233 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=PETRI_NET, 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 [2021-11-07 07:25:58,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 07:25:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-07 07:25:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:25:58,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:58,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:58,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:25:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-07 07:25:58,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:58,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007091154] [2021-11-07 07:25:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:58,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:58,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:58,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007091154] [2021-11-07 07:25:58,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007091154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:58,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:58,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:25:58,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906092207] [2021-11-07 07:25:58,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:25:58,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:25:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:25:58,449 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 07:25:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:58,465 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-07 07:25:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:25:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 07:25:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:58,499 INFO L225 Difference]: With dead ends: 31 [2021-11-07 07:25:58,500 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 07:25:58,502 INFO L786 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 [2021-11-07 07:25:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 07:25:58,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 07:25:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-07 07:25:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-07 07:25:58,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-07 07:25:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:58,574 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-07 07:25:58,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 07:25:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-07 07:25:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:25:58,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:58,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:58,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:25:58,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:25:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-07 07:25:58,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:58,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282890898] [2021-11-07 07:25:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:58,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:25:58,624 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:25:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:25:58,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:25:58,689 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:25:58,691 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 07:25:58,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:25:58,697 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 07:25:58,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:25:58,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:25:58 BoogieIcfgContainer [2021-11-07 07:25:58,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:25:58,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:25:58,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:25:58,743 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:25:58,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:25:58" (3/4) ... [2021-11-07 07:25:58,756 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:25:58,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:25:58,759 INFO L168 Benchmark]: Toolchain (without parser) took 1241.05 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 67.3 MB in the beginning and 100.3 MB in the end (delta: -33.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:25:58,760 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:25:58,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.67 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 67.1 MB in the beginning and 100.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 98.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,771 INFO L168 Benchmark]: Boogie Preprocessor took 36.71 ms. Allocated memory is still 125.8 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 890.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,772 INFO L168 Benchmark]: RCFGBuilder took 259.01 ms. Allocated memory is still 125.8 MB. Free memory was 97.2 MB in the beginning and 88.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,774 INFO L168 Benchmark]: TraceAbstraction took 573.43 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 100.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,775 INFO L168 Benchmark]: Witness Printer took 14.30 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.3 MB in the end (delta: 609.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:25:58,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.67 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 67.1 MB in the beginning and 100.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 98.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.71 ms. Allocated memory is still 125.8 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 890.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 259.01 ms. Allocated memory is still 125.8 MB. Free memory was 97.2 MB in the beginning and 88.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573.43 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 100.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 14.30 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.3 MB in the end (delta: 609.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=17occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-11-07 07:25:58,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be24fa7a3167c41dea480b89f4e22d6330a822b0fa562709df8f2f802f91c557 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:26:01,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:26:01,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:26:01,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:26:01,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:26:01,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:26:01,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:26:01,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:26:01,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:26:01,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:26:01,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:26:01,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:26:01,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:26:01,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:26:01,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:26:01,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:26:01,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:26:01,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:26:01,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:26:01,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:26:01,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:26:01,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:26:01,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:26:01,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:26:01,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:26:01,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:26:01,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:26:01,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:26:01,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:26:01,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:26:01,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:26:01,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:26:01,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:26:01,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:26:01,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:26:01,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:26:01,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:26:01,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:26:01,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:26:01,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:26:01,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:26:01,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 07:26:01,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:26:01,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:26:01,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:26:01,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:26:01,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:26:01,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:26:01,384 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:26:01,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:26:01,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:26:01,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:26:01,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:26:01,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:26:01,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:26:01,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:26:01,387 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:26:01,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:26:01,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:26:01,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:26:01,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:26:01,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:26:01,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:26:01,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:26:01,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:26:01,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:26:01,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:26:01,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:26:01,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:26:01,390 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:26:01,391 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:26:01,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:26:01,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:26:01,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:26:01,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:26:01,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:26:01,392 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_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be24fa7a3167c41dea480b89f4e22d6330a822b0fa562709df8f2f802f91c557 [2021-11-07 07:26:01,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:26:01,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:26:01,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:26:01,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:26:01,815 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:26:01,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-11-07 07:26:01,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/0f559cb34/e51748f999f145f9b313a8861042f7e3/FLAG10c11890c [2021-11-07 07:26:02,345 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:26:02,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-11-07 07:26:02,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/0f559cb34/e51748f999f145f9b313a8861042f7e3/FLAG10c11890c [2021-11-07 07:26:02,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/data/0f559cb34/e51748f999f145f9b313a8861042f7e3 [2021-11-07 07:26:02,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:26:02,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:26:02,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:26:02,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:26:02,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:26:02,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:02,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e446f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02, skipping insertion in model container [2021-11-07 07:26:02,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:02,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:26:02,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:26:02,922 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-11-07 07:26:02,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:26:02,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:26:02,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-11-07 07:26:02,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:26:02,988 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:26:02,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02 WrapperNode [2021-11-07 07:26:02,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:26:02,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:26:02,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:26:02,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:26:03,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:26:03,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:26:03,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:26:03,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:26:03,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:26:03,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:26:03,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:26:03,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:26:03,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (1/1) ... [2021-11-07 07:26:03,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:26:03,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:03,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:26:03,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:26:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:26:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:26:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:26:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:26:19,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:26:19,010 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 07:26:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:19 BoogieIcfgContainer [2021-11-07 07:26:19,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:26:19,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:26:19,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:26:19,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:26:19,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:26:02" (1/3) ... [2021-11-07 07:26:19,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568eb56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:19, skipping insertion in model container [2021-11-07 07:26:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:02" (2/3) ... [2021-11-07 07:26:19,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568eb56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:19, skipping insertion in model container [2021-11-07 07:26:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:19" (3/3) ... [2021-11-07 07:26:19,022 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2021-11-07 07:26:19,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:26:19,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 07:26:19,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:26:19,106 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=PETRI_NET, 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 [2021-11-07 07:26:19,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 07:26:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-07 07:26:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:26:19,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:19,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:19,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:26:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-07 07:26:19,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:26:19,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189195402] [2021-11-07 07:26:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:19,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:26:19,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:26:19,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:26:19,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:26:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:22,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 07:26:22,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:22,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:26:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:22,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:26:22,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189195402] [2021-11-07 07:26:22,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189195402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:22,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:22,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:26:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485661344] [2021-11-07 07:26:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:26:22,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:26:22,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:26:22,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:26:22,963 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 07:26:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:22,978 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-07 07:26:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:26:22,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 07:26:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:22,987 INFO L225 Difference]: With dead ends: 31 [2021-11-07 07:26:22,988 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 07:26:22,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:26:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 07:26:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 07:26:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-07 07:26:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-07 07:26:23,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-07 07:26:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:23,023 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-07 07:26:23,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 07:26:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-07 07:26:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:26:23,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:23,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:23,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:26:23,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:26:23,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:26:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-07 07:26:23,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:26:23,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724065290] [2021-11-07 07:26:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:23,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:26:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:26:23,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:26:23,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5411be6-68e7-4889-8085-9e805cb5e527/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process