./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc --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 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 --- 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-5e519f3 [2022-11-02 21:10:09,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:09,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:09,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:09,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:09,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:09,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:09,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:09,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:09,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:09,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:09,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:09,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:09,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:09,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:09,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:09,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:09,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:09,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:09,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:09,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:09,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:09,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:09,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:09,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:09,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:09,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:09,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:09,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:09,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:09,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:09,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:09,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:09,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:09,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:09,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:09,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:09,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:09,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:09,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:09,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:09,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:10:09,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:09,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:09,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:09,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:09,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:09,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:09,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:09,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:09,462 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:09,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:09,463 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:09,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:09,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:09,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:09,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:09,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:09,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:09,465 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:09,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:09,466 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:09,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:09,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:09,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:09,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:09,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:09,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:09,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:09,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:09,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:09,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:09,469 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:09,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:09,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:09,470 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_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 [2022-11-02 21:10:09,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:09,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:09,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:09,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:09,895 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:09,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-11-02 21:10:09,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/428407e82/45d24928cb0b49e69c13fad630b91759/FLAG3da2c508e [2022-11-02 21:10:10,464 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:10,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-11-02 21:10:10,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/428407e82/45d24928cb0b49e69c13fad630b91759/FLAG3da2c508e [2022-11-02 21:10:10,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/428407e82/45d24928cb0b49e69c13fad630b91759 [2022-11-02 21:10:10,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:10,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:10,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:10,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:10,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:10,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:10" (1/1) ... [2022-11-02 21:10:10,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea58347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:10, skipping insertion in model container [2022-11-02 21:10:10,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:10" (1/1) ... [2022-11-02 21:10:10,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:10,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:11,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[1224,1237] [2022-11-02 21:10:11,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[2806,2819] [2022-11-02 21:10:11,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:11,130 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:11,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[1224,1237] [2022-11-02 21:10:11,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[2806,2819] [2022-11-02 21:10:11,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:11,170 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:11,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11 WrapperNode [2022-11-02 21:10:11,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:11,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:11,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:11,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:11,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,239 INFO L138 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-11-02 21:10:11,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:11,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:11,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:11,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:11,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,286 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:11,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:11,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:11,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:11,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (1/1) ... [2022-11-02 21:10:11,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:11,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:11,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:10:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:10:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:10:11,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:11,469 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:11,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:11,695 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:11,695 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:11,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:11 BoogieIcfgContainer [2022-11-02 21:10:11,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:11,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:11,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:11,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:10" (1/3) ... [2022-11-02 21:10:11,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76968ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:11, skipping insertion in model container [2022-11-02 21:10:11,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:11" (2/3) ... [2022-11-02 21:10:11,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76968ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:11, skipping insertion in model container [2022-11-02 21:10:11,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:11" (3/3) ... [2022-11-02 21:10:11,707 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_4.i [2022-11-02 21:10:11,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:11,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:10:11,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:11,841 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f7d25f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:11,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:10:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:10:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:11,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:11,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:11,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-11-02 21:10:11,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:11,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968902289] [2022-11-02 21:10:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:11,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:12,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968902289] [2022-11-02 21:10:12,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968902289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:12,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:12,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637673305] [2022-11-02 21:10:12,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:12,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:10:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:10:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:10:12,105 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:12,125 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-11-02 21:10:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:10:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-02 21:10:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:12,135 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:10:12,135 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 21:10:12,138 INFO L412 NwaCegarLoop]: 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 [2022-11-02 21:10:12,142 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-11-02 21:10:12,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 21:10:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-02 21:10:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:10:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-02 21:10:12,181 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-11-02 21:10:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:12,182 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-02 21:10:12,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-02 21:10:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:12,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:12,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:10:12,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-11-02 21:10:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:12,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072631186] [2022-11-02 21:10:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:12,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:10:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:12,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:10:12,232 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:10:12,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-02 21:10:12,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-02 21:10:12,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:10:12,240 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 21:10:12,243 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:10:12,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:10:12 BoogieIcfgContainer [2022-11-02 21:10:12,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:10:12,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:10:12,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:10:12,275 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:10:12,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:11" (3/4) ... [2022-11-02 21:10:12,279 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:10:12,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:10:12,281 INFO L158 Benchmark]: Toolchain (without parser) took 1454.76ms. Allocated memory is still 107.0MB. Free memory was 67.6MB in the beginning and 42.6MB in the end (delta: 25.0MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,282 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:12,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.41ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 82.9MB in the end (delta: -15.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.02ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,289 INFO L158 Benchmark]: Boogie Preprocessor took 52.77ms. Allocated memory is still 107.0MB. Free memory was 80.8MB in the beginning and 79.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,290 INFO L158 Benchmark]: RCFGBuilder took 402.51ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 68.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,290 INFO L158 Benchmark]: TraceAbstraction took 574.46ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 43.0MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-02 21:10:12,290 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 107.0MB. Free memory was 43.0MB in the beginning and 42.6MB in the end (delta: 407.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:12,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.41ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 82.9MB in the end (delta: -15.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.02ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.77ms. Allocated memory is still 107.0MB. Free memory was 80.8MB in the beginning and 79.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.51ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 68.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 574.46ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 43.0MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 107.0MB. Free memory was 43.0MB in the beginning and 42.6MB in the end (delta: 407.8kB). 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53, x=53] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53, x=53] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=53] [L109] reach_error() VAL [IN=53] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-11-02 21:10:12,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc --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 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 --- 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-5e519f3 [2022-11-02 21:10:14,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:14,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:14,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:14,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:14,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:14,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:14,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:14,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:14,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:14,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:14,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:14,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:14,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:14,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:14,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:14,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:14,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:14,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:14,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:14,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:14,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:14,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:14,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:14,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:14,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:14,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:14,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:14,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:14,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:14,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:14,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:14,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:14,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:14,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:14,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:14,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:14,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:14,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:14,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:14,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:14,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 21:10:15,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:15,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:15,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:15,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:15,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:15,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:15,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:15,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:15,018 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:15,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:15,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:15,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:15,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:15,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:15,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:15,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:15,020 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:10:15,020 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:10:15,021 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:10:15,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:15,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:15,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:15,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:15,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:15,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:15,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:15,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:15,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:15,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:15,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:15,024 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:10:15,025 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:10:15,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:15,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:15,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:15,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:10:15,026 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_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ec86adef8cb9d9932012bcdd4007cb403d7f8d56dfb46a7c8cdbf60f080fa5 [2022-11-02 21:10:15,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:15,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:15,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:15,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:15,441 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:15,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-11-02 21:10:15,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/dcae89d8b/8c71a5683d844802ad1c0b8a600f595a/FLAG6fcf4cdd3 [2022-11-02 21:10:16,155 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:16,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i [2022-11-02 21:10:16,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/dcae89d8b/8c71a5683d844802ad1c0b8a600f595a/FLAG6fcf4cdd3 [2022-11-02 21:10:16,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/data/dcae89d8b/8c71a5683d844802ad1c0b8a600f595a [2022-11-02 21:10:16,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:16,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:16,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:16,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:16,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:16,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb6cda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16, skipping insertion in model container [2022-11-02 21:10:16,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:16,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:16,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[1224,1237] [2022-11-02 21:10:16,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[2806,2819] [2022-11-02 21:10:16,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:16,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:16,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[1224,1237] [2022-11-02 21:10:16,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/sv-benchmarks/c/combinations/gcd_4+newton_1_4.i[2806,2819] [2022-11-02 21:10:16,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:16,646 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:16,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16 WrapperNode [2022-11-02 21:10:16,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:16,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:16,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:16,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:16,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,713 INFO L138 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-11-02 21:10:16,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:16,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:16,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:16,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:16,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:16,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:16,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:16,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:16,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (1/1) ... [2022-11-02 21:10:16,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:16,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:16,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:16,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:10:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:10:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:10:16,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:16,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:22,652 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:22,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:22,658 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:22,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:22 BoogieIcfgContainer [2022-11-02 21:10:22,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:22,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:22,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:22,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:22,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:16" (1/3) ... [2022-11-02 21:10:22,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f0fc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:22, skipping insertion in model container [2022-11-02 21:10:22,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:16" (2/3) ... [2022-11-02 21:10:22,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f0fc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:22, skipping insertion in model container [2022-11-02 21:10:22,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:22" (3/3) ... [2022-11-02 21:10:22,669 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_4.i [2022-11-02 21:10:22,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:22,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:10:22,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:22,745 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47c34169, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:22,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:10:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:10:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:22,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:22,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:22,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-11-02 21:10:22,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:22,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613623328] [2022-11-02 21:10:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:22,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:22,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:22,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:10:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:24,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:10:24,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:24,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:24,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:24,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613623328] [2022-11-02 21:10:24,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613623328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:24,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:24,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:10:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205637090] [2022-11-02 21:10:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:10:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:10:24,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:10:24,171 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:24,220 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-11-02 21:10:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:10:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-02 21:10:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:24,243 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:10:24,243 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 21:10:24,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:10:24,249 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-11-02 21:10:24,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 21:10:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-02 21:10:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:10:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-02 21:10:24,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-11-02 21:10:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:24,282 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-02 21:10:24,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-02 21:10:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:10:24,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:24,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:24,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 21:10:24,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:24,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:24,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-11-02 21:10:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:24,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370506339] [2022-11-02 21:10:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:24,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:24,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:24,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:12:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:10,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:12:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:15,212 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-02 21:12:15,212 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:12:15,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-02 21:12:15,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-02 21:12:15,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:15,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:15,422 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 21:12:15,427 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:15,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:15 BoogieIcfgContainer [2022-11-02 21:12:15,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:15,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:15,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:15,471 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:15,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:22" (3/4) ... [2022-11-02 21:12:15,475 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 21:12:15,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:12:15,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:12:15,552 INFO L158 Benchmark]: Toolchain (without parser) took 119363.48ms. Allocated memory is still 81.8MB. Free memory was 46.6MB in the beginning and 50.8MB in the end (delta: -4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:15,553 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:15,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.01ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 64.2MB in the end (delta: -17.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-11-02 21:12:15,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.93ms. Allocated memory is still 81.8MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:15,555 INFO L158 Benchmark]: Boogie Preprocessor took 60.83ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 60.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:15,556 INFO L158 Benchmark]: RCFGBuilder took 5884.85ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 48.5MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:12:15,557 INFO L158 Benchmark]: TraceAbstraction took 112806.43ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 52.6MB in the end (delta: -4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:15,557 INFO L158 Benchmark]: Witness Printer took 80.16ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 50.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:15,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.01ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 64.2MB in the end (delta: -17.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.93ms. Allocated memory is still 81.8MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.83ms. Allocated memory is still 81.8MB. Free memory was 62.4MB in the beginning and 60.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5884.85ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 48.5MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 112806.43ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 52.6MB in the end (delta: -4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 80.16ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 50.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.7059057354927063, \result=-0.6487579345703125, x=-0.7059057354927063] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.7059057354927063, \result=0.7613664269447327, x=-0.7059057354927063] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.7059057354927063, x=0.14619112014770508] [L109] reach_error() VAL [IN=-0.7059057354927063, x=0.14619112014770508] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 112.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 106.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-11-02 21:12:15,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbb2e25-1c63-4db1-8eda-992c98e5b1e8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE