./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL --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 b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:22:10,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:22:10,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:22:10,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:22:10,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:22:10,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:22:10,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:22:10,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:22:10,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:22:10,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:22:10,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:22:10,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:22:10,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:22:10,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:22:10,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:22:10,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:22:10,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:22:10,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:22:10,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:22:10,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:22:10,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:22:10,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:22:10,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:22:10,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:22:10,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:22:10,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:22:10,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:22:10,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:22:10,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:22:10,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:22:10,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:22:10,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:22:10,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:22:10,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:22:10,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:22:10,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:22:10,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:22:10,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:22:10,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:22:10,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:22:10,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:22:10,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:22:10,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:22:10,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:22:10,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:22:10,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:22:10,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:22:10,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:22:10,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:22:10,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:22:10,496 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:22:10,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:22:10,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:22:10,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:22:10,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:22:10,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:22:10,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:22:10,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:22:10,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:22:10,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:22:10,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:22:10,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:22:10,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:22:10,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:22:10,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:22:10,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:22:10,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:10,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:22:10,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:22:10,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:22:10,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:22:10,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:22:10,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:22:10,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:22:10,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:22:10,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:22:10,508 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 [2021-11-19 04:22:10,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:10,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:10,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:10,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:10,930 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:10,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-11-19 04:22:11,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/e61ef20b1/c70ede078955463d9b02906f81fd3e69/FLAG4e8b128f4 [2021-11-19 04:22:11,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:11,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-11-19 04:22:11,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/e61ef20b1/c70ede078955463d9b02906f81fd3e69/FLAG4e8b128f4 [2021-11-19 04:22:11,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/e61ef20b1/c70ede078955463d9b02906f81fd3e69 [2021-11-19 04:22:11,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:11,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:22:11,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:11,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:11,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:11,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:11" (1/1) ... [2021-11-19 04:22:11,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a526d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:11, skipping insertion in model container [2021-11-19 04:22:11,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:11" (1/1) ... [2021-11-19 04:22:11,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:11,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:12,188 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[1226,1239] [2021-11-19 04:22:12,222 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[2820,2833] [2021-11-19 04:22:12,224 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:12,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:22:12,251 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[1226,1239] [2021-11-19 04:22:12,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[2820,2833] [2021-11-19 04:22:12,269 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:12,296 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:22:12,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12 WrapperNode [2021-11-19 04:22:12,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:12,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:22:12,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:22:12,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:22:12,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,354 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-19 04:22:12,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:22:12,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:22:12,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:22:12,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:22:12,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:22:12,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:22:12,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:22:12,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:22:12,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (1/1) ... [2021-11-19 04:22:12,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:12,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:22:12,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:22:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:22:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:22:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:22:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:22:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:22:12,566 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:22:12,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:22:12,776 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:22:12,785 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:22:12,785 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:22:12,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:12 BoogieIcfgContainer [2021-11-19 04:22:12,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:22:12,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:22:12,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:22:12,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:22:12,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:22:11" (1/3) ... [2021-11-19 04:22:12,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae79d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:12, skipping insertion in model container [2021-11-19 04:22:12,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:12" (2/3) ... [2021-11-19 04:22:12,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae79d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:12, skipping insertion in model container [2021-11-19 04:22:12,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:12" (3/3) ... [2021-11-19 04:22:12,813 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_3.i [2021-11-19 04:22:12,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:22:12,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:22:12,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:22:12,899 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:22:12,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:22:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:12,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:12,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:12,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:22:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-19 04:22:12,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:22:12,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28696835] [2021-11-19 04:22:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:12,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:22:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:13,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:22:13,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28696835] [2021-11-19 04:22:13,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28696835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:13,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:13,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:22:13,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804510524] [2021-11-19 04:22:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:13,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:22:13,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:22:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:22:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:13,204 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2021-11-19 04:22:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:13,264 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-19 04:22:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:22:13,267 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 [2021-11-19 04:22:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:13,278 INFO L225 Difference]: With dead ends: 47 [2021-11-19 04:22:13,279 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 04:22:13,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:13,288 INFO L933 BasicCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:13,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 04:22:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 04:22:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-19 04:22:13,339 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-19 04:22:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:13,340 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-19 04:22:13,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-19 04:22:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:13,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:13,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:13,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:22:13,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:22:13,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:13,350 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-19 04:22:13,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:22:13,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368252451] [2021-11-19 04:22:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:13,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:22:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:22:13,386 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:22:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:22:13,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:22:13,427 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:22:13,430 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 04:22:13,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 04:22:13,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:22:13,441 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:22:13,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:22:13,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:22:13 BoogieIcfgContainer [2021-11-19 04:22:13,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:22:13,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:22:13,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:22:13,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:22:13,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:12" (3/4) ... [2021-11-19 04:22:13,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:22:13,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:22:13,497 INFO L158 Benchmark]: Toolchain (without parser) took 1588.03ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.5MB in the beginning and 62.8MB in the end (delta: -7.3MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,498 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:22:13,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.68ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.3MB in the beginning and 99.8MB in the end (delta: -44.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.04ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,507 INFO L158 Benchmark]: Boogie Preprocessor took 52.44ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 97.1MB in the end (delta: 595.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:22:13,508 INFO L158 Benchmark]: RCFGBuilder took 386.89ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 85.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,509 INFO L158 Benchmark]: TraceAbstraction took 687.38ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 63.5MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,513 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 125.8MB. Free memory was 63.5MB in the beginning and 62.8MB in the end (delta: 750.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:22:13,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.68ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.3MB in the beginning and 99.8MB in the end (delta: -44.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.04ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.44ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 97.1MB in the end (delta: 595.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 386.89ms. Allocated memory is still 125.8MB. Free memory was 96.3MB in the beginning and 85.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 687.38ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 63.5MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 125.8MB. Free memory was 63.5MB in the beginning and 62.8MB in the end (delta: 750.1kB). 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 - UnprovableResult [Line: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L93] CALL, EXPR f(IN) [L80] 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)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 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, 31 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=27occurred 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 [2021-11-19 04:22:13,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL --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 b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:22:16,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:22:16,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:22:16,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:22:16,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:22:16,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:22:16,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:22:16,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:22:16,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:22:16,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:22:16,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:22:16,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:22:16,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:22:16,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:22:16,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:22:16,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:22:16,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:22:16,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:22:16,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:22:16,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:22:16,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:22:16,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:22:16,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:22:16,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:22:16,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:22:16,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:22:16,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:22:16,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:22:16,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:22:16,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:22:16,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:22:16,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:22:16,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:22:16,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:22:16,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:22:16,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:22:16,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:22:16,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:22:16,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:22:16,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:22:16,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:22:16,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 04:22:16,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:22:16,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:22:16,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:22:16,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:22:16,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:22:16,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:22:16,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:22:16,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:22:16,749 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:22:16,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:22:16,751 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:22:16,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:22:16,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:22:16,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:22:16,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:22:16,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:22:16,753 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:22:16,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:22:16,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:22:16,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:22:16,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:22:16,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:22:16,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:22:16,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:22:16,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:22:16,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:16,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:22:16,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:22:16,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:22:16,758 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:22:16,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:22:16,758 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:22:16,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:22:16,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:22:16,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:22:16,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:22:16,760 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d0e0bc78588895b656add1d66063876198ef9d2f1361e4e477992579946f34 [2021-11-19 04:22:17,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:17,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:17,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:17,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:17,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:17,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-11-19 04:22:17,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/9ddac7b7a/f5c8c6b119ad471e9867c5d27ae97c9d/FLAGc05ccfc71 [2021-11-19 04:22:18,043 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:18,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i [2021-11-19 04:22:18,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/9ddac7b7a/f5c8c6b119ad471e9867c5d27ae97c9d/FLAGc05ccfc71 [2021-11-19 04:22:18,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/data/9ddac7b7a/f5c8c6b119ad471e9867c5d27ae97c9d [2021-11-19 04:22:18,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:18,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:22:18,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:18,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:18,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:18,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f475508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18, skipping insertion in model container [2021-11-19 04:22:18,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:18,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:18,632 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[1226,1239] [2021-11-19 04:22:18,668 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[2820,2833] [2021-11-19 04:22:18,670 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:18,687 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:22:18,723 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[1226,1239] [2021-11-19 04:22:18,771 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_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/sv-benchmarks/c/combinations/gcd_2+newton_1_3.i[2820,2833] [2021-11-19 04:22:18,772 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:18,811 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:22:18,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18 WrapperNode [2021-11-19 04:22:18,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:18,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:22:18,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:22:18,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:22:18,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,912 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-19 04:22:18,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:22:18,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:22:18,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:22:18,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:22:18,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:18,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:22:19,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:22:19,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:22:19,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:22:19,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (1/1) ... [2021-11-19 04:22:19,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:22:19,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:22:19,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:22:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:22:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:22:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:22:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:22:19,247 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:22:19,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:22:26,321 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:22:26,328 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:22:26,328 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:22:26,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:26 BoogieIcfgContainer [2021-11-19 04:22:26,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:22:26,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:22:26,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:22:26,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:22:26,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:22:18" (1/3) ... [2021-11-19 04:22:26,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c446326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:26, skipping insertion in model container [2021-11-19 04:22:26,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:18" (2/3) ... [2021-11-19 04:22:26,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c446326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:26, skipping insertion in model container [2021-11-19 04:22:26,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:26" (3/3) ... [2021-11-19 04:22:26,342 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_3.i [2021-11-19 04:22:26,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:22:26,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:22:26,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:22:26,415 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:22:26,415 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:22:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:26,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:26,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:26,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:22:26,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-19 04:22:26,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:26,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713492373] [2021-11-19 04:22:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:26,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:26,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:26,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:22:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:28,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:22:28,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:28,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713492373] [2021-11-19 04:22:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713492373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:28,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:28,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:22:28,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52338904] [2021-11-19 04:22:28,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:28,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:22:28,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:22:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:28,323 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2021-11-19 04:22:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:28,341 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-19 04:22:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:22:28,343 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 [2021-11-19 04:22:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:28,354 INFO L225 Difference]: With dead ends: 47 [2021-11-19 04:22:28,354 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 04:22:28,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:28,362 INFO L933 BasicCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:28,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 04:22:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 04:22:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-19 04:22:28,404 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-19 04:22:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-19 04:22:28,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:22:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-19 04:22:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:28,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:28,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:28,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:28,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:22:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-19 04:22:28,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229735187] [2021-11-19 04:22:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:28,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5d38e5-5d5f-4651-ba4d-bcbabbaae324/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process