./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G --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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:44:23,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:44:23,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:44:23,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:44:23,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:44:23,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:44:23,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:44:23,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:44:23,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:44:23,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:44:23,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:44:23,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:44:23,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:44:23,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:44:23,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:44:23,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:44:23,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:44:23,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:44:23,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:44:23,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:44:23,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:44:23,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:44:23,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:44:23,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:44:23,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:44:23,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:44:23,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:44:23,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:44:23,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:44:23,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:44:23,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:44:23,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:44:23,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:44:23,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:44:23,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:44:23,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:44:23,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:44:23,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:44:23,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:44:23,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:44:23,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:44:23,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-23 12:44:23,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:44:23,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:44:23,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:44:23,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:44:23,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:44:23,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:44:23,344 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:44:23,344 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 12:44:23,344 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 12:44:23,344 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 12:44:23,346 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 12:44:23,346 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 12:44:23,346 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 12:44:23,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:44:23,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:44:23,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:44:23,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:44:23,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:44:23,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:44:23,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 12:44:23,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 12:44:23,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 12:44:23,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:44:23,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:44:23,349 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 12:44:23,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:44:23,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 12:44:23,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:44:23,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:44:23,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:44:23,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:44:23,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:44:23,352 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 12:44:23,353 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_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-11-23 12:44:23,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:44:23,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:44:23,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:44:23,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:44:23,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:44:23,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-23 12:44:23,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/data/6c21281c1/6ff5ba3a612b42fd8882734a8ca084a4/FLAGba49db953 [2021-11-23 12:44:24,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:44:24,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-11-23 12:44:24,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/data/6c21281c1/6ff5ba3a612b42fd8882734a8ca084a4/FLAGba49db953 [2021-11-23 12:44:24,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/data/6c21281c1/6ff5ba3a612b42fd8882734a8ca084a4 [2021-11-23 12:44:24,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:44:24,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:44:24,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:24,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:44:24,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:44:24,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:24" (1/1) ... [2021-11-23 12:44:24,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6828fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:24, skipping insertion in model container [2021-11-23 12:44:24,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:24" (1/1) ... [2021-11-23 12:44:24,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:44:24,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:24,984 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_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-23 12:44:24,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:24,995 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:44:25,013 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_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-11-23 12:44:25,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:25,027 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:44:25,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25 WrapperNode [2021-11-23 12:44:25,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:25,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:25,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:44:25,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:44:25,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,062 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2021-11-23 12:44:25,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:25,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:44:25,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:44:25,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:44:25,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:44:25,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:44:25,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:44:25,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:44:25,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (1/1) ... [2021-11-23 12:44:25,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:25,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:25,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 12:44:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:44:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:44:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:44:25,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:44:25,244 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:44:25,245 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:44:25,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:44:25,469 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:44:25,479 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:44:25,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:25 BoogieIcfgContainer [2021-11-23 12:44:25,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:44:25,483 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 12:44:25,483 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 12:44:25,487 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 12:44:25,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:44:25,488 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:44:24" (1/3) ... [2021-11-23 12:44:25,490 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31437d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:44:25, skipping insertion in model container [2021-11-23 12:44:25,490 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:44:25,490 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:25" (2/3) ... [2021-11-23 12:44:25,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31437d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:44:25, skipping insertion in model container [2021-11-23 12:44:25,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:44:25,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:25" (3/3) ... [2021-11-23 12:44:25,493 INFO L388 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-11-23 12:44:25,572 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 12:44:25,572 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 12:44:25,572 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 12:44:25,572 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 12:44:25,573 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 12:44:25,573 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 12:44:25,573 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 12:44:25,573 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 12:44:25,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 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) [2021-11-23 12:44:25,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-23 12:44:25,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:25,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:25,642 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 12:44:25,642 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-23 12:44:25,642 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 12:44:25,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 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) [2021-11-23 12:44:25,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-23 12:44:25,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:25,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:25,651 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 12:44:25,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-23 12:44:25,660 INFO L791 eck$LassoCheckResult]: Stem: 4#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(17, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 7#L111true [2021-11-23 12:44:25,661 INFO L793 eck$LassoCheckResult]: Loop: 7#L111true assume !false; 5#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 13#L36true assume 8466 == main_~s__state~0#1; 15#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 18#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 7#L111true [2021-11-23 12:44:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 12:44:25,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:25,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693689451] [2021-11-23 12:44:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:25,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-11-23 12:44:25,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:25,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118793379] [2021-11-23 12:44:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:25,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,878 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,900 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-11-23 12:44:25,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491466338] [2021-11-23 12:44:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:25,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:25,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:26,117 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:26,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:26,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:26,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:26,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 12:44:26,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:26,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:26,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-23 12:44:26,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:26,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:26,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,218 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:26,219 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 12:44:26,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:26,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:26,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 12:44:26,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:26,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:26,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:26,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:26,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:26,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 12:44:26,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:26,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 12:44:26,375 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 12:44:26,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:26,416 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:26,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:26,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:26,435 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:26,435 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 12:44:26,435 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:26,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:26,436 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-11-23 12:44:26,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:26,436 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:26,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:26,527 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:26,531 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 12:44:26,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:26,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:26,542 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 [2021-11-23 12:44:26,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:26,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:26,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:26,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:26,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:26,557 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:26,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:26,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 12:44:26,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 12:44:26,587 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 12:44:26,587 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 12:44:26,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:26,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:26,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 12:44:26,647 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 12:44:26,648 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 12:44:26,648 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 12:44:26,649 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -1*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2021-11-23 12:44:26,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-23 12:44:26,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 12:44:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:26,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:26,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:26,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:26,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:26,874 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 [2021-11-23 12:44:26,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-23 12:44:26,971 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 52 states and 84 transitions. Complement of second has 5 states. [2021-11-23 12:44:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 12:44:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-23 12:44:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-11-23 12:44:26,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-11-23 12:44:26,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:26,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-11-23 12:44:26,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:26,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-11-23 12:44:26,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:26,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-11-23 12:44:26,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-23 12:44:27,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-11-23 12:44:27,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-23 12:44:27,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-11-23 12:44:27,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-11-23 12:44:27,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:27,013 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-11-23 12:44:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-11-23 12:44:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-23 12:44:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 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) [2021-11-23 12:44:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-11-23 12:44:27,048 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-23 12:44:27,048 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-23 12:44:27,048 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 12:44:27,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-11-23 12:44:27,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-23 12:44:27,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:27,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:27,053 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 12:44:27,053 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-23 12:44:27,054 INFO L791 eck$LassoCheckResult]: Stem: 124#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(17, 2);call #Ultimate.allocInit(12, 3); 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 148#L111 assume !false; 120#L30 [2021-11-23 12:44:27,056 INFO L793 eck$LassoCheckResult]: Loop: 120#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 121#L36 assume 8466 == main_~s__state~0#1; 144#L37 assume !(0 == main_~blastFlag~0#1); 151#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 130#L111 assume !false; 120#L30 [2021-11-23 12:44:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-23 12:44:27,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:27,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480630444] [2021-11-23 12:44:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:27,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:27,083 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:27,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-11-23 12:44:27,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786744776] [2021-11-23 12:44:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:27,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:27,101 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:27,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-11-23 12:44:27,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:27,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910356880] [2021-11-23 12:44:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:27,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:27,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910356880] [2021-11-23 12:44:27,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910356880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:27,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:27,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:27,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114626376] [2021-11-23 12:44:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:27,235 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:27,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:27,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:27,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:27,235 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 12:44:27,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:27,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:27,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-23 12:44:27,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:27,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:27,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:27,302 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 12:44:27,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:27,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:27,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 12:44:27,342 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 12:44:27,342 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 12:44:27,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:27,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:27,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:27,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 12:44:27,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 12:44:27,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 12:44:27,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-11-23 12:44:27,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 12:44:27,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:27,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:27,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:27,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 12:44:27,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 12:44:27,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:27,524 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 12:44:27,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:27,561 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:27,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:27,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:27,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:27,561 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 12:44:27,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,562 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:27,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:27,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-11-23 12:44:27,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:27,562 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:27,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:27,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:27,635 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 12:44:27,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,644 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 [2021-11-23 12:44:27,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:27,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:27,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:27,654 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 12:44:27,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:27,657 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 12:44:27,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:27,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 12:44:27,675 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 12:44:27,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:27,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,728 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 [2021-11-23 12:44:27,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:27,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:27,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:27,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:27,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:27,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:27,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:27,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 12:44:27,755 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 12:44:27,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-11-23 12:44:27,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,804 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 [2021-11-23 12:44:27,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:27,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:27,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:27,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:27,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:27,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:27,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:27,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 12:44:27,834 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 12:44:27,836 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 12:44:27,837 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 12:44:27,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:27,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:27,838 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:27,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 12:44:27,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 12:44:27,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 12:44:27,844 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 12:44:27,844 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8489 Supporting invariants [] [2021-11-23 12:44:27,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:27,864 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 12:44:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:27,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:27,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:27,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:27,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:27,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 12:44:27,952 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-11-23 12:44:28,059 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 104 states and 155 transitions. Complement of second has 7 states. [2021-11-23 12:44:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 12:44:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-11-23 12:44:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-11-23 12:44:28,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-11-23 12:44:28,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:28,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-11-23 12:44:28,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:28,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-11-23 12:44:28,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:28,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-11-23 12:44:28,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-23 12:44:28,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-11-23 12:44:28,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-11-23 12:44:28,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-23 12:44:28,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-11-23 12:44:28,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:28,071 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-11-23 12:44:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-11-23 12:44:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-11-23 12:44:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 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) [2021-11-23 12:44:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-11-23 12:44:28,077 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-11-23 12:44:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:28,081 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-23 12:44:28,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-23 12:44:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:28,119 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-11-23 12:44:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:28,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-11-23 12:44:28,123 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-23 12:44:28,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-11-23 12:44:28,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-11-23 12:44:28,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-11-23 12:44:28,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-11-23 12:44:28,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:28,126 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-11-23 12:44:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-11-23 12:44:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-23 12:44:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 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) [2021-11-23 12:44:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-11-23 12:44:28,133 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-23 12:44:28,134 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-11-23 12:44:28,134 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 12:44:28,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-11-23 12:44:28,136 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-23 12:44:28,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:28,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:28,136 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 12:44:28,137 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:44:28,137 INFO L791 eck$LassoCheckResult]: Stem: 459#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(17, 2);call #Ultimate.allocInit(12, 3); 460#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 481#L111 assume !false; 455#L30 [2021-11-23 12:44:28,137 INFO L793 eck$LassoCheckResult]: Loop: 455#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 456#L36 assume !(8466 == main_~s__state~0#1); 478#L41 assume 8512 == main_~s__state~0#1; 482#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 476#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 465#L111 assume !false; 455#L30 [2021-11-23 12:44:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:28,138 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-11-23 12:44:28,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:28,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398049689] [2021-11-23 12:44:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:28,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:28,143 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:28,149 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-11-23 12:44:28,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:28,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019464744] [2021-11-23 12:44:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:28,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:28,154 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:28,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-11-23 12:44:28,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091345802] [2021-11-23 12:44:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:28,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:28,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091345802] [2021-11-23 12:44:28,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091345802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:28,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:28,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:28,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262608361] [2021-11-23 12:44:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:28,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,224 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:28,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:28,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:28,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:28,225 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 12:44:28,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:28,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:28,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-23 12:44:28,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:28,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:28,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,287 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:28,287 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 12:44:28,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,291 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:28,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 12:44:28,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 12:44:28,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=2} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 12:44:28,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:28,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:28,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-23 12:44:28,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 12:44:28,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=5, ULTIMATE.start_main_~tmp___1~0#1=5} Honda state: {ULTIMATE.start_main_#t~nondet5#1=5, ULTIMATE.start_main_~tmp___1~0#1=5} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 12:44:28,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,443 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:28,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:28,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 12:44:28,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,515 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 12:44:28,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 12:44:28,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:28,555 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 12:44:28,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,577 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:28,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:28,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:28,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:28,577 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 12:44:28,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:28,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:28,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-11-23 12:44:28,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:28,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:28,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:28,638 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:28,639 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 12:44:28,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,640 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,651 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 [2021-11-23 12:44:28,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:28,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:28,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:28,661 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 12:44:28,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:28,663 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 12:44:28,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:28,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 12:44:28,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 12:44:28,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,717 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,722 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 [2021-11-23 12:44:28,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:28,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:28,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:28,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:28,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:28,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:28,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:28,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 12:44:28,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 12:44:28,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,786 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,797 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 [2021-11-23 12:44:28,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:28,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:28,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:28,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:28,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:28,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:28,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:28,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 12:44:28,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 12:44:28,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 12:44:28,835 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 12:44:28,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:28,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:28,846 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 12:44:28,847 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 12:44:28,847 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 12:44:28,847 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-11-23 12:44:28,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 12:44:28,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:28,888 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 12:44:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:28,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:28,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:28,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:29,009 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 12:44:29,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-11-23 12:44:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-23 12:44:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-11-23 12:44:29,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-23 12:44:29,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-11-23 12:44:29,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-11-23 12:44:29,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-11-23 12:44:29,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-11-23 12:44:29,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-11-23 12:44:29,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-11-23 12:44:29,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-11-23 12:44:29,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-11-23 12:44:29,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:29,128 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-11-23 12:44:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-11-23 12:44:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-11-23 12:44:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 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) [2021-11-23 12:44:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-11-23 12:44:29,146 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-11-23 12:44:29,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:29,147 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:29,172 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-11-23 12:44:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:29,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-11-23 12:44:29,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-23 12:44:29,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-11-23 12:44:29,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-23 12:44:29,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-11-23 12:44:29,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-11-23 12:44:29,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:29,185 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-23 12:44:29,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-11-23 12:44:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-23 12:44:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 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) [2021-11-23 12:44:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-11-23 12:44:29,199 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-23 12:44:29,199 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-11-23 12:44:29,199 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 12:44:29,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-11-23 12:44:29,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-23 12:44:29,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:29,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:29,201 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:29,201 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:44:29,201 INFO L791 eck$LassoCheckResult]: Stem: 941#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(17, 2);call #Ultimate.allocInit(12, 3); 942#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 947#L111 assume !false; 939#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 940#L36 assume 8466 == main_~s__state~0#1; 969#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 987#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 983#L111 assume !false; 982#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 980#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2021-11-23 12:44:29,201 INFO L793 eck$LassoCheckResult]: Loop: 975#L41 assume 8512 == main_~s__state~0#1; 970#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 961#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 963#L111 assume !false; 937#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 938#L36 assume !(8466 == main_~s__state~0#1); 975#L41 [2021-11-23 12:44:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-11-23 12:44:29,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433186310] [2021-11-23 12:44:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:29,215 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:29,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-11-23 12:44:29,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210370608] [2021-11-23 12:44:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:29,229 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:29,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-11-23 12:44:29,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528706487] [2021-11-23 12:44:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:29,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528706487] [2021-11-23 12:44:29,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528706487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:29,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:29,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:29,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803793217] [2021-11-23 12:44:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:29,293 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:29,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:29,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:29,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:29,293 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 12:44:29,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:29,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:29,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-23 12:44:29,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:29,294 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:29,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:29,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:29,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:29,336 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 12:44:29,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-23 12:44:29,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:29,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:29,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:29,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 12:44:29,408 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 12:44:29,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:29,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,432 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-23 12:44:29,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:29,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:29,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:29,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,479 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-23 12:44:29,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 12:44:29,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:29,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 12:44:29,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:29,514 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:29,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:29,514 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:29,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:29,515 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 12:44:29,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:29,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:29,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-11-23 12:44:29,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:29,515 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:29,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:29,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:29,568 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:29,568 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 12:44:29,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,570 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-23 12:44:29,583 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 [2021-11-23 12:44:29,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:29,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:29,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:29,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:29,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:29,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:29,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:29,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 12:44:29,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:29,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,628 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-23 12:44:29,630 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 [2021-11-23 12:44:29,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:29,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:29,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:29,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:29,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:29,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:29,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:29,675 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 12:44:29,688 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 12:44:29,688 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 12:44:29,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:29,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:29,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-23 12:44:29,696 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 12:44:29,696 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 12:44:29,696 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 12:44:29,696 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8576 Supporting invariants [] [2021-11-23 12:44:29,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-11-23 12:44:29,717 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 12:44:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:29,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:29,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:29,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:29,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:29,856 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 12:44:29,856 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 12:44:29,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 183 states and 281 transitions. Complement of second has 9 states. [2021-11-23 12:44:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-23 12:44:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 12:44:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-11-23 12:44:29,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-11-23 12:44:29,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-11-23 12:44:29,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-11-23 12:44:29,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:29,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-11-23 12:44:29,970 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-11-23 12:44:29,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-11-23 12:44:29,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-11-23 12:44:29,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-11-23 12:44:29,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-11-23 12:44:29,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:29,974 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-11-23 12:44:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-11-23 12:44:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-11-23 12:44:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 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) [2021-11-23 12:44:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-11-23 12:44:29,984 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-11-23 12:44:29,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:29,985 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-23 12:44:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,016 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-11-23 12:44:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:30,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-11-23 12:44:30,019 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-11-23 12:44:30,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-11-23 12:44:30,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-11-23 12:44:30,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-23 12:44:30,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-11-23 12:44:30,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:30,023 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-11-23 12:44:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-11-23 12:44:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-11-23 12:44:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 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) [2021-11-23 12:44:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-11-23 12:44:30,030 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-23 12:44:30,030 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-11-23 12:44:30,030 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 12:44:30,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-11-23 12:44:30,032 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-11-23 12:44:30,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:30,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:30,033 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,033 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,033 INFO L791 eck$LassoCheckResult]: Stem: 1552#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(17, 2);call #Ultimate.allocInit(12, 3); 1553#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1577#L111 assume !false; 1674#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1672#L36 assume 8466 == main_~s__state~0#1; 1648#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1645#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2021-11-23 12:44:30,034 INFO L793 eck$LassoCheckResult]: Loop: 1558#L111 assume !false; 1548#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1549#L36 assume !(8466 == main_~s__state~0#1); 1575#L41 assume !(8512 == main_~s__state~0#1); 1591#L57 assume !(8640 == main_~s__state~0#1); 1554#L61 assume 8656 == main_~s__state~0#1; 1555#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1564#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1566#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1590#L111 assume !false; 1624#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1625#L36 assume 8466 == main_~s__state~0#1; 1581#L37 assume !(0 == main_~blastFlag~0#1); 1582#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1558#L111 [2021-11-23 12:44:30,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-11-23 12:44:30,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889867795] [2021-11-23 12:44:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,049 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-11-23 12:44:30,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339568654] [2021-11-23 12:44:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339568654] [2021-11-23 12:44:30,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339568654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:30,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24334223] [2021-11-23 12:44:30,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,104 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 12:44:30,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:30,105 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 12:44:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,138 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-11-23 12:44:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:30,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-11-23 12:44:30,144 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-23 12:44:30,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-11-23 12:44:30,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-11-23 12:44:30,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-11-23 12:44:30,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-11-23 12:44:30,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:30,148 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-23 12:44:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-11-23 12:44:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-23 12:44:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 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) [2021-11-23 12:44:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-11-23 12:44:30,162 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-23 12:44:30,162 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-11-23 12:44:30,162 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-23 12:44:30,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-11-23 12:44:30,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-11-23 12:44:30,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:30,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:30,166 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,167 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,167 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1880#L111 assume !false; 1881#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2008#L36 assume 8466 == main_~s__state~0#1; 1992#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1989#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2021-11-23 12:44:30,167 INFO L793 eck$LassoCheckResult]: Loop: 1940#L111 assume !false; 1960#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1958#L36 assume !(8466 == main_~s__state~0#1); 1955#L41 assume !(8512 == main_~s__state~0#1); 1952#L57 assume !(8640 == main_~s__state~0#1); 1876#L61 assume 8656 == main_~s__state~0#1; 1877#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1883#L100-1 assume !(4 == main_~blastFlag~0#1); 1884#L107 assume !(5 == main_~blastFlag~0#1); 1918#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1919#L111 assume !false; 1978#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1979#L36 assume 8466 == main_~s__state~0#1; 1968#L37 assume !(0 == main_~blastFlag~0#1); 1965#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1940#L111 [2021-11-23 12:44:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-11-23 12:44:30,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011570129] [2021-11-23 12:44:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,208 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-11-23 12:44:30,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286636852] [2021-11-23 12:44:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286636852] [2021-11-23 12:44:30,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286636852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:30,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027005877] [2021-11-23 12:44:30,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,242 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 12:44:30,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:30,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:30,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:30,243 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-23 12:44:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,283 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-11-23 12:44:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:30,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-11-23 12:44:30,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-23 12:44:30,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-11-23 12:44:30,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-11-23 12:44:30,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-11-23 12:44:30,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-11-23 12:44:30,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:30,290 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-11-23 12:44:30,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-11-23 12:44:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-11-23 12:44:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 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) [2021-11-23 12:44:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-11-23 12:44:30,294 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-23 12:44:30,294 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-11-23 12:44:30,294 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-23 12:44:30,294 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-11-23 12:44:30,295 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-11-23 12:44:30,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:30,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:30,297 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,297 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,297 INFO L791 eck$LassoCheckResult]: Stem: 2215#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(17, 2);call #Ultimate.allocInit(12, 3); 2216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2234#L111 assume !false; 2300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2237#L36 assume 8466 == main_~s__state~0#1; 2238#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2266#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2268#L111 [2021-11-23 12:44:30,298 INFO L793 eck$LassoCheckResult]: Loop: 2268#L111 assume !false; 2310#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2308#L36 assume !(8466 == main_~s__state~0#1); 2306#L41 assume !(8512 == main_~s__state~0#1); 2252#L57 assume !(8640 == main_~s__state~0#1); 2221#L61 assume 8656 == main_~s__state~0#1; 2222#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2228#L100-1 assume !(4 == main_~blastFlag~0#1); 2229#L107 assume !(5 == main_~blastFlag~0#1); 2245#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2223#L111 assume !false; 2224#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2235#L36 assume !(8466 == main_~s__state~0#1); 2236#L41 assume !(8512 == main_~s__state~0#1); 2246#L57 assume 8640 == main_~s__state~0#1; 2304#L58 assume !(3 == main_~blastFlag~0#1); 2311#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2268#L111 [2021-11-23 12:44:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-11-23 12:44:30,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180676244] [2021-11-23 12:44:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-11-23 12:44:30,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917585170] [2021-11-23 12:44:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917585170] [2021-11-23 12:44:30,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917585170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:30,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744551743] [2021-11-23 12:44:30,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,377 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 12:44:30,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:30,383 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 12:44:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,402 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-11-23 12:44:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:30,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-11-23 12:44:30,405 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-23 12:44:30,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-11-23 12:44:30,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-11-23 12:44:30,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-11-23 12:44:30,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-11-23 12:44:30,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:30,408 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-23 12:44:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-11-23 12:44:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-23 12:44:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 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) [2021-11-23 12:44:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-23 12:44:30,412 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-23 12:44:30,412 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-23 12:44:30,412 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-23 12:44:30,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-11-23 12:44:30,413 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-11-23 12:44:30,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:30,414 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:30,416 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,416 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,417 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2443#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2460#L111 assume !false; 2541#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2540#L36 assume 8466 == main_~s__state~0#1; 2500#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2495#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2450#L111 [2021-11-23 12:44:30,417 INFO L793 eck$LassoCheckResult]: Loop: 2450#L111 assume !false; 2444#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2445#L36 assume !(8466 == main_~s__state~0#1); 2461#L41 assume !(8512 == main_~s__state~0#1); 2472#L57 assume !(8640 == main_~s__state~0#1); 2478#L61 assume 8656 == main_~s__state~0#1; 2546#L62 assume !(2 == main_~blastFlag~0#1); 2454#L100-1 assume !(4 == main_~blastFlag~0#1); 2455#L107 assume !(5 == main_~blastFlag~0#1); 2471#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2477#L111 assume !false; 2525#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2522#L36 assume !(8466 == main_~s__state~0#1); 2515#L41 assume !(8512 == main_~s__state~0#1); 2512#L57 assume 8640 == main_~s__state~0#1; 2482#L58 assume !(3 == main_~blastFlag~0#1); 2479#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2450#L111 [2021-11-23 12:44:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-11-23 12:44:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602905527] [2021-11-23 12:44:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-11-23 12:44:30,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634052326] [2021-11-23 12:44:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634052326] [2021-11-23 12:44:30,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634052326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:30,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890136605] [2021-11-23 12:44:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,485 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 12:44:30,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:30,487 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 12:44:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:30,502 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-11-23 12:44:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:30,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-11-23 12:44:30,505 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-23 12:44:30,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-11-23 12:44:30,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-11-23 12:44:30,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-11-23 12:44:30,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-11-23 12:44:30,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:30,510 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-11-23 12:44:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-11-23 12:44:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-11-23 12:44:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 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) [2021-11-23 12:44:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-11-23 12:44:30,520 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-23 12:44:30,520 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-11-23 12:44:30,520 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-23 12:44:30,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-11-23 12:44:30,524 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-23 12:44:30,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:30,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:30,527 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,528 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:30,528 INFO L791 eck$LassoCheckResult]: Stem: 2706#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(17, 2);call #Ultimate.allocInit(12, 3); 2707#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2725#L111 assume !false; 2780#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2775#L36 assume 8466 == main_~s__state~0#1; 2773#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2770#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2714#L111 [2021-11-23 12:44:30,528 INFO L793 eck$LassoCheckResult]: Loop: 2714#L111 assume !false; 2708#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2709#L36 assume !(8466 == main_~s__state~0#1); 2726#L41 assume !(8512 == main_~s__state~0#1); 2735#L57 assume !(8640 == main_~s__state~0#1); 2712#L61 assume 8656 == main_~s__state~0#1; 2713#L62 assume !(2 == main_~blastFlag~0#1); 2807#L100-1 assume !(4 == main_~blastFlag~0#1); 2733#L107 assume !(5 == main_~blastFlag~0#1); 2734#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2714#L111 [2021-11-23 12:44:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-11-23 12:44:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926146355] [2021-11-23 12:44:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,542 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-11-23 12:44:30,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105723631] [2021-11-23 12:44:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,562 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:30,567 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-11-23 12:44:30,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:30,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758836530] [2021-11-23 12:44:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:30,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758836530] [2021-11-23 12:44:30,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758836530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:30,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425220095] [2021-11-23 12:44:30,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,640 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:30,640 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:30,640 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:30,640 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:30,640 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 12:44:30,640 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,640 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:30,640 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:30,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-23 12:44:30,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:30,641 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:30,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,726 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:30,726 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 12:44:30,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:30,728 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-23 12:44:30,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 12:44:30,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:30,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:30,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:30,803 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-23 12:44:30,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 12:44:30,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 12:44:30,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 12:44:30,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:30,857 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 12:44:30,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 12:44:30,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 12:44:30,857 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 12:44:30,857 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 12:44:30,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 12:44:30,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 12:44:30,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-11-23 12:44:30,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 12:44:30,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 12:44:30,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 12:44:30,934 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 12:44:30,934 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 12:44:30,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:30,938 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,950 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 [2021-11-23 12:44:30,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-23 12:44:30,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 12:44:30,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 12:44:30,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 12:44:30,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 12:44:30,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 12:44:30,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 12:44:30,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 12:44:30,963 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 12:44:30,965 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 12:44:30,965 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 12:44:30,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:44:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:30,966 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:30,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-23 12:44:30,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 12:44:30,968 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 12:44:30,969 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 12:44:30,969 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2021-11-23 12:44:30,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:30,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 12:44:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:31,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:44:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:31,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:44:31,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:31,107 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 [2021-11-23 12:44:31,108 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 12:44:31,144 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 148 states and 178 transitions. Complement of second has 6 states. [2021-11-23 12:44:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 12:44:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 12:44:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-11-23 12:44:31,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-11-23 12:44:31,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:31,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-11-23 12:44:31,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:31,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-11-23 12:44:31,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 12:44:31,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-11-23 12:44:31,149 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-11-23 12:44:31,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-11-23 12:44:31,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-11-23 12:44:31,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-23 12:44:31,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-11-23 12:44:31,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:31,152 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-23 12:44:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-11-23 12:44:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-23 12:44:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 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) [2021-11-23 12:44:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-11-23 12:44:31,156 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-11-23 12:44:31,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:31,157 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 12:44:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:31,171 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-11-23 12:44:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:31,172 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-11-23 12:44:31,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-23 12:44:31,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-11-23 12:44:31,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-23 12:44:31,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-23 12:44:31,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-11-23 12:44:31,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 12:44:31,176 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-23 12:44:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-11-23 12:44:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 12:44:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 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) [2021-11-23 12:44:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-11-23 12:44:31,178 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-23 12:44:31,178 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-23 12:44:31,178 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-23 12:44:31,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-11-23 12:44:31,179 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-11-23 12:44:31,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:44:31,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:44:31,180 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:31,180 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:31,180 INFO L791 eck$LassoCheckResult]: Stem: 3244#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(17, 2);call #Ultimate.allocInit(12, 3); 3245#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3248#L111 assume !false; 3240#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3241#L36 assume 8466 == main_~s__state~0#1; 3294#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3293#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3291#L111 assume !false; 3250#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3292#L36 assume !(8466 == main_~s__state~0#1); 3290#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2021-11-23 12:44:31,181 INFO L793 eck$LassoCheckResult]: Loop: 3263#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3255#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3256#L111 assume !false; 3300#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3297#L36 assume 8466 == main_~s__state~0#1; 3266#L37 assume !(0 == main_~blastFlag~0#1); 3267#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3272#L111 assume !false; 3299#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3298#L36 assume !(8466 == main_~s__state~0#1); 3269#L41 assume 8512 == main_~s__state~0#1; 3263#L42 [2021-11-23 12:44:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-11-23 12:44:31,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:31,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147078719] [2021-11-23 12:44:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:31,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,187 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,193 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:31,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-11-23 12:44:31,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:31,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637540864] [2021-11-23 12:44:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:31,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,198 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-11-23 12:44:31,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:31,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971659411] [2021-11-23 12:44:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:31,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,231 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:44:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:44:31,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:44:31,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:31,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:31,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:44:31 BoogieIcfgContainer [2021-11-23 12:44:31,571 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 12:44:31,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:44:31,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:44:31,572 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:44:31,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:25" (3/4) ... [2021-11-23 12:44:31,575 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-23 12:44:31,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:44:31,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:44:31,614 INFO L158 Benchmark]: Toolchain (without parser) took 6925.70ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 90.2MB in the beginning and 114.0MB in the end (delta: -23.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,614 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:31,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.79ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 99.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.72ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,616 INFO L158 Benchmark]: Boogie Preprocessor took 21.23ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 97.1MB in the end (delta: 933.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,616 INFO L158 Benchmark]: RCFGBuilder took 396.11ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 87.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,617 INFO L158 Benchmark]: BuchiAutomizer took 6088.83ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 87.1MB in the beginning and 116.1MB in the end (delta: -29.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-23 12:44:31,617 INFO L158 Benchmark]: Witness Printer took 40.94ms. Allocated memory is still 157.3MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:44:31,620 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 83.9MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.79ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 99.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.72ms. Allocated memory is still 123.7MB. Free memory was 99.6MB in the beginning and 98.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.23ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 97.1MB in the end (delta: 933.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.11ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 87.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6088.83ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 87.1MB in the beginning and 116.1MB in the end (delta: -29.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Witness Printer took 40.94ms. Allocated memory is still 157.3MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.9s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 182 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 548 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 352 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf91 smp100 dnf177 smp79 tf112 neg94 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6792a8fb=4, NULL=0, NULL=0, s__hit=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45c6ca94=0, s__state=8512, tmp___1=4, NULL=1, \result=0, blastFlag=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 12:44:31,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbb088b-8ff1-439b-b23e-2ef7ce0a1a97/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)