./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/eureka_05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/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_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/eureka_05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:00:56,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:00:56,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:00:56,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:00:56,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:00:56,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:00:56,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:00:56,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:00:56,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:00:56,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:00:56,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:00:56,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:00:56,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:00:56,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:00:56,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:00:56,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:00:56,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:00:56,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:00:56,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:00:56,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:00:56,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:00:56,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:00:56,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:00:56,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:00:56,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:00:56,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:00:56,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:00:56,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:00:56,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:00:56,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:00:56,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:00:56,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:00:56,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:00:56,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:00:56,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:00:56,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:00:56,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:00:56,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:00:56,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:00:56,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:00:56,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:00:56,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-19 05:00:56,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:00:56,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:00:56,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:00:56,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:00:56,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:00:56,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:00:56,418 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:00:56,418 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-19 05:00:56,418 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-19 05:00:56,419 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-19 05:00:56,420 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-19 05:00:56,420 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-19 05:00:56,420 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-19 05:00:56,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:00:56,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:00:56,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:00:56,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:00:56,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:00:56,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:00:56,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-19 05:00:56,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-19 05:00:56,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-19 05:00:56,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:00:56,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:00:56,423 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-19 05:00:56,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:00:56,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-19 05:00:56,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:00:56,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:00:56,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:00:56,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:00:56,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:00:56,426 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-19 05:00:56,426 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2021-11-19 05:00:56,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:00:56,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:00:56,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:00:56,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:00:56,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:00:56,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/loops/eureka_05.i [2021-11-19 05:00:56,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/data/dd062a0df/10631b4e0bf749d5831a2d754c04b52c/FLAGaae749a1f [2021-11-19 05:00:57,242 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:00:57,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/sv-benchmarks/c/loops/eureka_05.i [2021-11-19 05:00:57,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/data/dd062a0df/10631b4e0bf749d5831a2d754c04b52c/FLAGaae749a1f [2021-11-19 05:00:57,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/data/dd062a0df/10631b4e0bf749d5831a2d754c04b52c [2021-11-19 05:00:57,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:00:57,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:00:57,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:00:57,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:00:57,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:00:57,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:57,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20583d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57, skipping insertion in model container [2021-11-19 05:00:57,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:57,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:00:57,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:00:57,854 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_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/sv-benchmarks/c/loops/eureka_05.i[810,823] [2021-11-19 05:00:57,879 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:00:57,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:00:57,899 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_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/sv-benchmarks/c/loops/eureka_05.i[810,823] [2021-11-19 05:00:57,908 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:00:57,923 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:00:57,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57 WrapperNode [2021-11-19 05:00:57,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:00:57,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:00:57,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:00:57,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:00:57,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:57,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:57,997 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2021-11-19 05:00:57,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:00:57,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:00:57,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:00:57,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:00:58,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:00:58,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:00:58,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:00:58,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:00:58,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (1/1) ... [2021-11-19 05:00:58,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:00:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:00:58,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:00:58,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-19 05:00:58,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:00:58,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:00:58,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:00:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:00:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:00:58,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:00:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:00:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:00:58,224 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:00:58,226 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:00:58,419 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:00:58,425 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:00:58,426 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 05:00:58,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:58 BoogieIcfgContainer [2021-11-19 05:00:58,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:00:58,441 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-19 05:00:58,441 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-19 05:00:58,445 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-19 05:00:58,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 05:00:58,446 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 05:00:57" (1/3) ... [2021-11-19 05:00:58,448 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2145c70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 05:00:58, skipping insertion in model container [2021-11-19 05:00:58,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 05:00:58,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:57" (2/3) ... [2021-11-19 05:00:58,449 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2145c70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 05:00:58, skipping insertion in model container [2021-11-19 05:00:58,449 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 05:00:58,449 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:58" (3/3) ... [2021-11-19 05:00:58,451 INFO L388 chiAutomizerObserver]: Analyzing ICFG eureka_05.i [2021-11-19 05:00:58,507 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-19 05:00:58,508 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-19 05:00:58,508 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-19 05:00:58,508 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-19 05:00:58,508 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-19 05:00:58,508 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-19 05:00:58,508 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-19 05:00:58,509 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-19 05:00:58,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 05:00:58,548 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-19 05:00:58,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:00:58,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:00:58,563 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-19 05:00:58,563 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-19 05:00:58,563 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-19 05:00:58,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 05:00:58,569 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-19 05:00:58,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:00:58,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:00:58,570 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-19 05:00:58,570 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-19 05:00:58,579 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 7#L44-3true [2021-11-19 05:00:58,580 INFO L793 eck$LassoCheckResult]: Loop: 7#L44-3true assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 19#L44-2true main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 7#L44-3true [2021-11-19 05:00:58,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:00:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-19 05:00:58,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:00:58,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391567942] [2021-11-19 05:00:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:00:58,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:00:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,711 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:00:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:00:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:00:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-19 05:00:58,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:00:58,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026221599] [2021-11-19 05:00:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:00:58,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:00:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:00:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:00:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:00:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-19 05:00:58,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:00:58,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108197033] [2021-11-19 05:00:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:00:58,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:00:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,829 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:00:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:00:58,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:00:59,607 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 05:00:59,608 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 05:00:59,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 05:00:59,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 05:00:59,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 05:00:59,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:00:59,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 05:00:59,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 05:00:59,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: eureka_05.i_Iteration1_Lasso [2021-11-19 05:00:59,611 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 05:00:59,611 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 05:00:59,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:00:59,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:00:59,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:00:59,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:01:00,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:01:00,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:01:00,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:01:00,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 05:01:00,442 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 05:01:00,446 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 05:01:00,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,475 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 05:01:00,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 05:01:00,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 05:01:00,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-19 05:01:00,489 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-19 05:01:00,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,528 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-19 05:01:00,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,603 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,604 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,617 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,682 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,682 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-19 05:01:00,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,775 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-19 05:01:00,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,824 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-19 05:01:00,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:00,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-19 05:01:00,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:00,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:00,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:00,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:00,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:00,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:00,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:00,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:00,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:00,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:00,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:01,002 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:01,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:01,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:01,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:01,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:01,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:01,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-19 05:01:01,036 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:01,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:01,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:01,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:01,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-19 05:01:01,076 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:01,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:01,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:01,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:01,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:01,087 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:01,087 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:01,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 05:01:01,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:01,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:01,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:01,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:01,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-19 05:01:01,140 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 05:01:01,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 05:01:01,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 05:01:01,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 05:01:01,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 05:01:01,154 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-19 05:01:01,154 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-19 05:01:01,179 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 05:01:01,211 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-11-19 05:01:01,211 INFO L444 ModelExtractionUtils]: 2 out of 16 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-11-19 05:01:01,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 05:01:01,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:01,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:01,267 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 05:01:01,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-19 05:01:01,286 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-19 05:01:01,286 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 05:01:01,286 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1#1, v_rep(select #length ULTIMATE.start_main_~#array~1#1.base)_1) = 8*ULTIMATE.start_main_~i~1#1 + 1*v_rep(select #length ULTIMATE.start_main_~#array~1#1.base)_1 Supporting invariants [] [2021-11-19 05:01:01,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:01,462 INFO L297 tatePredicateManager]: 28 out of 28 supporting invariants were superfluous and have been removed [2021-11-19 05:01:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:01,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:01:01,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:01:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:01,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:01:01,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:01:01,606 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 05:01:01,654 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 05:01:01,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:01:01,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Result 48 states and 71 transitions. Complement of second has 8 states. [2021-11-19 05:01:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 05:01:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:01:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2021-11-19 05:01:01,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-19 05:01:01,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 05:01:01,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-19 05:01:01,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 05:01:01,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-19 05:01:01,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 05:01:01,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 71 transitions. [2021-11-19 05:01:01,730 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 05:01:01,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 18 states and 24 transitions. [2021-11-19 05:01:01,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-19 05:01:01,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-11-19 05:01:01,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-11-19 05:01:01,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:01:01,737 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-19 05:01:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-11-19 05:01:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-19 05:01:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 states have internal predecessors, (24), 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 05:01:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-19 05:01:01,767 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-19 05:01:01,767 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-19 05:01:01,767 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-19 05:01:01,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2021-11-19 05:01:01,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 05:01:01,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:01:01,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:01:01,769 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-19 05:01:01,769 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 05:01:01,770 INFO L791 eck$LassoCheckResult]: Stem: 225#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 226#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 227#L44-3 assume !(main_~i~1#1 >= 0); 228#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 224#L30-3 [2021-11-19 05:01:01,770 INFO L793 eck$LassoCheckResult]: Loop: 224#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 237#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 238#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 223#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 224#L30-3 [2021-11-19 05:01:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-11-19 05:01:01,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:01,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92215641] [2021-11-19 05:01:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:01,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:01,819 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 05:01:01,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:01,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92215641] [2021-11-19 05:01:01,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92215641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:01,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:01,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:01:01,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178563861] [2021-11-19 05:01:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:01,830 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-19 05:01:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 1 times [2021-11-19 05:01:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:01,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257687905] [2021-11-19 05:01:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:01,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:01,858 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:01,883 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:01,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:01:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:01,996 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 05:01:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:02,014 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-11-19 05:01:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:01:02,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 23 transitions. [2021-11-19 05:01:02,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 22 transitions. [2021-11-19 05:01:02,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-19 05:01:02,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-19 05:01:02,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-11-19 05:01:02,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:01:02,019 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-19 05:01:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-11-19 05:01:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-19 05:01:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 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 05:01:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-19 05:01:02,022 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-19 05:01:02,022 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-19 05:01:02,022 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-19 05:01:02,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-11-19 05:01:02,023 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:01:02,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:01:02,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:01:02,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 05:01:02,024 INFO L791 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 267#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 268#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 269#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 270#L44-3 assume !(main_~i~1#1 >= 0); 271#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 265#L30-3 [2021-11-19 05:01:02,024 INFO L793 eck$LassoCheckResult]: Loop: 265#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 279#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 280#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 264#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 265#L30-3 [2021-11-19 05:01:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-11-19 05:01:02,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:02,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003864588] [2021-11-19 05:01:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:02,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003864588] [2021-11-19 05:01:02,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003864588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:01:02,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435768230] [2021-11-19 05:01:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:01:02,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:02,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:01:02,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 05:01:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:02,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:01:02,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:01:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:01:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435768230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:01:02,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:01:02,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-19 05:01:02,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207273054] [2021-11-19 05:01:02,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:01:02,207 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-19 05:01:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 2 times [2021-11-19 05:01:02,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:02,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514939049] [2021-11-19 05:01:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:02,238 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:02,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:02,357 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. cyclomatic complexity: 7 Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:02,419 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-19 05:01:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:01:02,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2021-11-19 05:01:02,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 31 transitions. [2021-11-19 05:01:02,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-19 05:01:02,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-19 05:01:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2021-11-19 05:01:02,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:01:02,428 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-19 05:01:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2021-11-19 05:01:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-11-19 05:01:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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 05:01:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-19 05:01:02,433 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-19 05:01:02,434 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-19 05:01:02,434 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-19 05:01:02,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2021-11-19 05:01:02,438 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:01:02,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:01:02,439 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-11-19 05:01:02,439 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 05:01:02,440 INFO L791 eck$LassoCheckResult]: Stem: 349#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 350#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 351#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 352#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 353#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 354#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 369#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 368#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 367#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 366#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 365#L44-3 assume !(main_~i~1#1 >= 0); 355#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 348#L30-3 [2021-11-19 05:01:02,440 INFO L793 eck$LassoCheckResult]: Loop: 348#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 363#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 364#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 347#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 348#L30-3 [2021-11-19 05:01:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2021-11-19 05:01:02,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:02,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048871049] [2021-11-19 05:01:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:02,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048871049] [2021-11-19 05:01:02,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048871049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:01:02,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135137243] [2021-11-19 05:01:02,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:01:02,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:01:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:02,578 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:01:02,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 05:01:02,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:01:02,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:01:02,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:01:02,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:01:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:01:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:02,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135137243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:01:02,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:01:02,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-11-19 05:01:02,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652089055] [2021-11-19 05:01:02,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:01:02,722 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-19 05:01:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 3 times [2021-11-19 05:01:02,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:02,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327826482] [2021-11-19 05:01:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:02,744 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:02,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:02,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:01:02,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:01:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:01:02,919 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. cyclomatic complexity: 7 Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:02,978 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-11-19 05:01:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:01:02,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2021-11-19 05:01:02,981 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 45 transitions. [2021-11-19 05:01:02,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-11-19 05:01:02,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-11-19 05:01:02,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 45 transitions. [2021-11-19 05:01:02,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:01:02,983 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-11-19 05:01:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 45 transitions. [2021-11-19 05:01:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2021-11-19 05:01:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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 05:01:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-19 05:01:02,987 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-19 05:01:02,987 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-19 05:01:02,987 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-19 05:01:02,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 29 transitions. [2021-11-19 05:01:02,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:02,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:01:02,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:01:02,989 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-11-19 05:01:02,989 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 05:01:02,989 INFO L791 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 490#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 491#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 492#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 493#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 494#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 511#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 510#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 509#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 508#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 507#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 506#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 505#L44-3 assume !(main_~i~1#1 >= 0); 495#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 488#L30-3 [2021-11-19 05:01:02,989 INFO L793 eck$LassoCheckResult]: Loop: 488#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 503#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 504#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 487#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 488#L30-3 [2021-11-19 05:01:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 3 times [2021-11-19 05:01:02,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:02,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157046931] [2021-11-19 05:01:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:02,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,010 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:03,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 4 times [2021-11-19 05:01:03,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:03,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831626381] [2021-11-19 05:01:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,062 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,070 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -743535747, now seen corresponding path program 1 times [2021-11-19 05:01:03,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:03,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440990094] [2021-11-19 05:01:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 05:01:03,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:03,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440990094] [2021-11-19 05:01:03,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440990094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:03,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:03,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:01:03,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528446887] [2021-11-19 05:01:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:03,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:01:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:01:03,268 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. cyclomatic complexity: 7 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:03,322 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-19 05:01:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:01:03,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 41 transitions. [2021-11-19 05:01:03,324 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-19 05:01:03,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 41 transitions. [2021-11-19 05:01:03,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-19 05:01:03,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-19 05:01:03,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 41 transitions. [2021-11-19 05:01:03,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:01:03,326 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-19 05:01:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 41 transitions. [2021-11-19 05:01:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-11-19 05:01:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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 05:01:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-19 05:01:03,328 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-19 05:01:03,328 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-19 05:01:03,328 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-19 05:01:03,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2021-11-19 05:01:03,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:01:03,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:01:03,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:01:03,330 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:03,330 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-19 05:01:03,330 INFO L791 eck$LassoCheckResult]: Stem: 560#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 561#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 562#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 563#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 564#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 565#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 584#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 583#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 582#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 581#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 580#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 579#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 578#L44-3 assume !(main_~i~1#1 >= 0); 566#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 567#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 576#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 572#L33 [2021-11-19 05:01:03,330 INFO L793 eck$LassoCheckResult]: Loop: 572#L33 assume SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1;havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1;SelectionSort_~rh~0#1 := SelectionSort_~i~0#1; 573#L32-2 SelectionSort_#t~post2#1 := SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_#t~post2#1;havoc SelectionSort_#t~post2#1; 575#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 572#L33 [2021-11-19 05:01:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425501, now seen corresponding path program 1 times [2021-11-19 05:01:03,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:03,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513545129] [2021-11-19 05:01:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,364 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,391 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash 64667, now seen corresponding path program 1 times [2021-11-19 05:01:03,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:03,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113353504] [2021-11-19 05:01:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,397 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:01:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:01:03,402 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:01:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1574719937, now seen corresponding path program 1 times [2021-11-19 05:01:03,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:03,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654959249] [2021-11-19 05:01:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 05:01:03,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:03,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654959249] [2021-11-19 05:01:03,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654959249] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:01:03,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242736924] [2021-11-19 05:01:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:03,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:01:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:03,931 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:01:03,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 05:01:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:03,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 05:01:04,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:01:04,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:01:04,097 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:01:04,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:01:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:01:04,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-19 05:01:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:01:04,278 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:01:04,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:01:04,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:01:04,403 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:01:04,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:01:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:01:04,516 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:01:04,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:01:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:01:04,635 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-19 05:01:04,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-19 05:02:52,843 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:03:17,076 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:03:41,234 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:03:41,279 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-19 05:03:41,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 23 [2021-11-19 05:03:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 05:03:41,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:03:42,676 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~1#1| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-19 05:03:51,135 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_49| Int) (|v_ULTIMATE.start_main_~i~1#1_51| Int) (|ULTIMATE.start_main_~i~1#1| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|) (+ (* |v_ULTIMATE.start_main_~i~1#1_51| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_51|) (+ (* |v_ULTIMATE.start_main_~i~1#1_49| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_49|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-19 05:04:01,174 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_49| Int) (|ULTIMATE.start_main_~#array~1#1.offset| Int) (|v_ULTIMATE.start_main_~i~1#1_51| Int) (|v_ULTIMATE.start_main_~i~1#1_55| Int) (|ULTIMATE.start_main_~i~1#1| Int) (|v_ULTIMATE.start_main_~i~1#1_53| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|) (+ (* |v_ULTIMATE.start_main_~i~1#1_55| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_55|) (+ (* |v_ULTIMATE.start_main_~i~1#1_53| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_53|) (+ (* |v_ULTIMATE.start_main_~i~1#1_51| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_51|) (+ (* |v_ULTIMATE.start_main_~i~1#1_49| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_49|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-19 05:04:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 19 not checked. [2021-11-19 05:04:01,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242736924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:04:01,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:04:01,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2021-11-19 05:04:01,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039484261] [2021-11-19 05:04:01,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:04:01,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 05:04:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=405, Unknown=21, NotChecked=132, Total=650 [2021-11-19 05:04:01,439 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. cyclomatic complexity: 7 Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 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 05:04:49,753 WARN L227 SmtUtils]: Spent 24.04s on a formula simplification. DAG size of input: 32 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:05:13,853 WARN L227 SmtUtils]: Spent 24.06s on a formula simplification. DAG size of input: 34 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:05:37,941 WARN L227 SmtUtils]: Spent 24.06s on a formula simplification. DAG size of input: 51 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:05:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:38,002 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-19 05:05:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:05:38,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 33 transitions. [2021-11-19 05:05:38,004 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 05:05:38,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 33 transitions. [2021-11-19 05:05:38,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-19 05:05:38,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-19 05:05:38,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2021-11-19 05:05:38,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 05:05:38,005 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-19 05:05:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2021-11-19 05:05:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-19 05:05:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 states have internal predecessors, (32), 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 05:05:38,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-19 05:05:38,009 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-19 05:05:38,009 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-19 05:05:38,009 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-19 05:05:38,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 32 transitions. [2021-11-19 05:05:38,010 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-19 05:05:38,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 05:05:38,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 05:05:38,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:38,011 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-19 05:05:38,012 INFO L791 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(20);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 768#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 769#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 770#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 771#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 772#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 792#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 791#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 790#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 789#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 788#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 787#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 786#L44-3 assume !(main_~i~1#1 >= 0); 773#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 774#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 783#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 779#L33 assume !(SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1);havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1; 780#L32-2 [2021-11-19 05:05:38,012 INFO L793 eck$LassoCheckResult]: Loop: 780#L32-2 SelectionSort_#t~post2#1 := SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_#t~post2#1;havoc SelectionSort_#t~post2#1; 782#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 785#L33 assume SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1;havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1;SelectionSort_~rh~0#1 := SelectionSort_~i~0#1; 780#L32-2 [2021-11-19 05:05:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:38,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1638583016, now seen corresponding path program 1 times [2021-11-19 05:05:38,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:38,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27592663] [2021-11-19 05:05:38,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:38,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:05:38,042 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:05:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:05:38,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:05:38,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash 68297, now seen corresponding path program 2 times [2021-11-19 05:05:38,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:38,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599920532] [2021-11-19 05:05:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:38,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:05:38,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:05:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:05:38,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:05:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1571618174, now seen corresponding path program 1 times [2021-11-19 05:05:38,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:38,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469003815] [2021-11-19 05:05:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:38,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:38,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:38,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469003815] [2021-11-19 05:05:38,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469003815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:38,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822663366] [2021-11-19 05:05:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:38,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:05:38,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:38,879 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:05:38,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 05:05:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 05:05:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:38,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:39,037 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:05:39,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:05:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:39,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-19 05:05:39,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:39,238 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:05:39,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:05:39,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:39,349 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:05:39,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:05:39,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:39,493 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 05:05:39,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 05:05:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:05:39,641 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-19 05:05:39,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-19 05:06:27,810 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:06:40,039 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:06:52,206 WARN L227 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:07:04,496 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:07:04,534 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-19 05:07:04,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 23 [2021-11-19 05:07:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 05:07:04,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:15,201 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_63| Int) (|ULTIMATE.start_main_~i~1#1| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|) (+ (* |v_ULTIMATE.start_main_~i~1#1_63| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_63|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 8))))) is different from false [2021-11-19 05:08:02,368 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 05:08:02,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 05:08:02,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:08:02,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-19 05:08:02,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930169705] [2021-11-19 05:08:02,389 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:02,391 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:53) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.(UndoableWrapperScript.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:179) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:159) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition(TransFormulaUtils.java:231) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition(TransFormulaUtils.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeTF(LassoCheck.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeLoopTF(LassoCheck.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:833) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 30 more [2021-11-19 05:08:02,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 05:08:02,404 INFO L158 Benchmark]: Toolchain (without parser) took 424753.44ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 85.2MB in the beginning and 97.4MB in the end (delta: -12.2MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-11-19 05:08:02,405 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:08:02,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.70ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 96.7MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:08:02,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.17ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:08:02,406 INFO L158 Benchmark]: Boogie Preprocessor took 55.58ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:08:02,407 INFO L158 Benchmark]: RCFGBuilder took 385.14ms. Allocated memory is still 121.6MB. Free memory was 93.4MB in the beginning and 82.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:08:02,407 INFO L158 Benchmark]: BuchiAutomizer took 423962.74ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.4MB in the beginning and 97.4MB in the end (delta: -15.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-19 05:08:02,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.70ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 96.7MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.17ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.58ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.14ms. Allocated memory is still 121.6MB. Free memory was 93.4MB in the beginning and 82.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 423962.74ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 82.4MB in the beginning and 97.4MB in the end (delta: -15.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-19 05:08:02,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:02,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-19 05:08:02,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-19 05:08:03,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4f09aa-1110-4c57-9dc7-6c239f6e019d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken