./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strrchr.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strrchr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:35:13,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:13,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:13,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:13,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:13,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:13,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:13,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:13,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:13,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:13,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:13,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:13,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:13,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:13,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:13,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:13,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:13,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:13,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:13,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:13,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:13,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:13,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:13,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:13,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:13,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:13,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:13,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:13,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:13,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:13,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:13,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:13,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:13,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:13,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:13,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:13,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:13,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:13,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:13,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:13,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:13,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 19:35:13,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:13,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:13,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:13,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:13,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:13,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:13,290 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:13,290 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 19:35:13,290 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 19:35:13,290 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 19:35:13,291 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 19:35:13,291 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 19:35:13,291 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 19:35:13,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:13,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:35:13,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:35:13,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:13,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 19:35:13,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 19:35:13,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 19:35:13,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:35:13,293 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 19:35:13,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:13,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 19:35:13,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:13,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:13,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:13,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:35:13,296 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 19:35:13,296 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_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b850f5453e922b3972aa9b5b79a1b07337c08d581cc5e6a2a56803408dc479cf [2022-11-18 19:35:13,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:13,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:13,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:13,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:13,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:13,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-dietlibc/strrchr.i [2022-11-18 19:35:13,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/data/954d439b2/a75c2c12870b4d2d941b4ac9620463da/FLAG4b47dc113 [2022-11-18 19:35:14,356 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:14,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/sv-benchmarks/c/termination-dietlibc/strrchr.i [2022-11-18 19:35:14,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/data/954d439b2/a75c2c12870b4d2d941b4ac9620463da/FLAG4b47dc113 [2022-11-18 19:35:14,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/data/954d439b2/a75c2c12870b4d2d941b4ac9620463da [2022-11-18 19:35:14,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:14,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:14,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:14,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:14,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:14,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210b983c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14, skipping insertion in model container [2022-11-18 19:35:14,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:14,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:15,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:15,143 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:35:15,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:15,243 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:35:15,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15 WrapperNode [2022-11-18 19:35:15,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:15,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:15,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:35:15,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:35:15,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,330 INFO L138 Inliner]: procedures = 114, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2022-11-18 19:35:15,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:15,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:35:15,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:35:15,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:35:15,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:35:15,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:35:15,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:35:15,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:35:15,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (1/1) ... [2022-11-18 19:35:15,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:15,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:15,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 19:35:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:35:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:35:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:35:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:35:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:35:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:35:15,649 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:35:15,651 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:35:15,902 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:35:15,909 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:35:15,910 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:35:15,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:15 BoogieIcfgContainer [2022-11-18 19:35:15,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:35:15,914 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 19:35:15,914 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 19:35:15,919 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 19:35:15,920 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:35:15,920 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 07:35:14" (1/3) ... [2022-11-18 19:35:15,921 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e54496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:35:15, skipping insertion in model container [2022-11-18 19:35:15,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:35:15,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:15" (2/3) ... [2022-11-18 19:35:15,922 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e54496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:35:15, skipping insertion in model container [2022-11-18 19:35:15,922 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:35:15,923 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:15" (3/3) ... [2022-11-18 19:35:15,924 INFO L332 chiAutomizerObserver]: Analyzing ICFG strrchr.i [2022-11-18 19:35:15,993 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 19:35:15,993 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 19:35:15,993 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 19:35:15,994 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 19:35:15,994 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 19:35:15,994 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 19:35:15,994 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 19:35:15,995 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 19:35:16,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:16,026 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-11-18 19:35:16,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:16,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:16,033 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 19:35:16,033 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 19:35:16,033 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 19:35:16,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:16,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-11-18 19:35:16,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:16,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:16,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 19:35:16,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 19:35:16,067 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 12#L521true assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 13#L523-3true [2022-11-18 19:35:16,069 INFO L750 eck$LassoCheckResult]: Loop: 13#L523-3true assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 20#L523-2true main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 13#L523-3true [2022-11-18 19:35:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-11-18 19:35:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125534967] [2022-11-18 19:35:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1443, now seen corresponding path program 1 times [2022-11-18 19:35:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:16,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590767656] [2022-11-18 19:35:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 28695942, now seen corresponding path program 1 times [2022-11-18 19:35:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:16,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607466433] [2022-11-18 19:35:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:16,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:16,844 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:35:16,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:35:16,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:35:16,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:35:16,845 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:35:16,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:16,846 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:35:16,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:35:16,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration1_Lasso [2022-11-18 19:35:16,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:35:16,847 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:35:16,872 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,884 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,893 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,896 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,903 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,907 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:16,910 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:17,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:17,513 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:35:17,518 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:35:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,530 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 [2022-11-18 19:35:17,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 19:35:17,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,588 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 [2022-11-18 19:35:17,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 19:35:17,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,650 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 [2022-11-18 19:35:17,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 19:35:17,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,670 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:17,670 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:17,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,719 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 [2022-11-18 19:35:17,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 19:35:17,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,772 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 [2022-11-18 19:35:17,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 19:35:17,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,802 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,823 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 [2022-11-18 19:35:17,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 19:35:17,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,866 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,887 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 [2022-11-18 19:35:17,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 19:35:17,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,906 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:17,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:17,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,945 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 [2022-11-18 19:35:17,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:17,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:17,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:17,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:17,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:17,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:17,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:17,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 19:35:17,986 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:17,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:17,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:17,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 19:35:18,008 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 [2022-11-18 19:35:18,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:18,029 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:18,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:18,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,068 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 [2022-11-18 19:35:18,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 19:35:18,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:18,094 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:18,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:18,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,132 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 [2022-11-18 19:35:18,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 19:35:18,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,149 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:18,149 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:18,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:18,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,182 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 [2022-11-18 19:35:18,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:18,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:18,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 19:35:18,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:18,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 19:35:18,218 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 [2022-11-18 19:35:18,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:18,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:18,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:18,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:18,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 19:35:18,282 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 [2022-11-18 19:35:18,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:18,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:18,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:18,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:18,306 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:18,306 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:18,334 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:35:18,377 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-11-18 19:35:18,378 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2022-11-18 19:35:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:18,389 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:18,396 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:35:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 19:35:18,416 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-11-18 19:35:18,416 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:35:18,416 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~in_len~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~in_len~0#1 Supporting invariants [] [2022-11-18 19:35:18,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:18,440 INFO L156 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2022-11-18 19:35:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:18,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:35:18,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:18,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:35:18,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:18,596 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 19:35:18,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:18,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 65 states and 97 transitions. Complement of second has 7 states. [2022-11-18 19:35:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 19:35:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2022-11-18 19:35:18,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-18 19:35:18,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:18,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-18 19:35:18,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:18,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 65 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-18 19:35:18,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:18,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 97 transitions. [2022-11-18 19:35:18,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:18,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 20 states and 26 transitions. [2022-11-18 19:35:18,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-18 19:35:18,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-18 19:35:18,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2022-11-18 19:35:18,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:18,714 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-18 19:35:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2022-11-18 19:35:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-18 19:35:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-18 19:35:18,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-18 19:35:18,749 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-18 19:35:18,749 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 19:35:18,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-18 19:35:18,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:18,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:18,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:18,753 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-18 19:35:18,753 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:18,754 INFO L748 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 143#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 151#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 154#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 144#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 145#L511-2 [2022-11-18 19:35:18,754 INFO L750 eck$LassoCheckResult]: Loop: 145#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 159#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 148#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 146#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 147#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 160#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 157#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 158#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 161#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 153#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 152#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 149#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 150#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 145#L511-2 [2022-11-18 19:35:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 28695884, now seen corresponding path program 1 times [2022-11-18 19:35:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:18,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399139480] [2022-11-18 19:35:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:18,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:18,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:18,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 1 times [2022-11-18 19:35:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:18,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086130419] [2022-11-18 19:35:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:18,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:18,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash 149619625, now seen corresponding path program 1 times [2022-11-18 19:35:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:18,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442259438] [2022-11-18 19:35:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:19,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442259438] [2022-11-18 19:35:19,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442259438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:19,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:19,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:35:19,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330425769] [2022-11-18 19:35:19,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:35:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:35:19,963 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:20,127 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-18 19:35:20,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-18 19:35:20,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:20,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 21 states and 26 transitions. [2022-11-18 19:35:20,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-18 19:35:20,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-18 19:35:20,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2022-11-18 19:35:20,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:20,129 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-18 19:35:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2022-11-18 19:35:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-11-18 19:35:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-11-18 19:35:20,132 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-18 19:35:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:35:20,133 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-18 19:35:20,133 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 19:35:20,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2022-11-18 19:35:20,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:20,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:20,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:20,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:20,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:20,137 INFO L748 eck$LassoCheckResult]: Stem: 204#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 205#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 214#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 216#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 217#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 218#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 206#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 207#L511-2 [2022-11-18 19:35:20,137 INFO L750 eck$LassoCheckResult]: Loop: 207#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 221#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 210#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 208#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 209#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 222#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 219#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 220#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 223#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 215#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 213#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 211#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 212#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 207#L511-2 [2022-11-18 19:35:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1806996910, now seen corresponding path program 1 times [2022-11-18 19:35:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273811560] [2022-11-18 19:35:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:20,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:20,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 2 times [2022-11-18 19:35:20,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:20,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24433675] [2022-11-18 19:35:20,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:20,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:20,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:20,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 729709191, now seen corresponding path program 1 times [2022-11-18 19:35:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:20,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396991914] [2022-11-18 19:35:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:20,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396991914] [2022-11-18 19:35:20,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396991914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464332178] [2022-11-18 19:35:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:20,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:20,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:20,755 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:20,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:35:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:20,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:35:20,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:21,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:21,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:35:21,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:35:21,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:35:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:21,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:21,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-11-18 19:35:21,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2022-11-18 19:35:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:22,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464332178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:22,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:22,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-11-18 19:35:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362947261] [2022-11-18 19:35:22,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:35:22,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:35:22,436 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 7 Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:23,049 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-18 19:35:23,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2022-11-18 19:35:23,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:23,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2022-11-18 19:35:23,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-11-18 19:35:23,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-18 19:35:23,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2022-11-18 19:35:23,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:23,051 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-18 19:35:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2022-11-18 19:35:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-18 19:35:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-18 19:35:23,054 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-18 19:35:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:35:23,060 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-18 19:35:23,060 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 19:35:23,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2022-11-18 19:35:23,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:23,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:23,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:23,062 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:23,062 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:23,062 INFO L748 eck$LassoCheckResult]: Stem: 421#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 422#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 430#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 431#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 432#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 433#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 419#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 420#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 438#L512 assume !(strrchr_#t~mem2#1 == strrchr_~ch~0#1);havoc strrchr_#t~mem2#1; 425#L512-2 [2022-11-18 19:35:23,062 INFO L750 eck$LassoCheckResult]: Loop: 425#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 423#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 424#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 439#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 436#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 437#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 440#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 435#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 429#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 426#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 427#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 428#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 441#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 425#L512-2 [2022-11-18 19:35:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1357243859, now seen corresponding path program 1 times [2022-11-18 19:35:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:23,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000048824] [2022-11-18 19:35:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:23,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:23,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1358949434, now seen corresponding path program 3 times [2022-11-18 19:35:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:23,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972559379] [2022-11-18 19:35:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:23,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:23,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 159746984, now seen corresponding path program 1 times [2022-11-18 19:35:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:23,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712281400] [2022-11-18 19:35:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712281400] [2022-11-18 19:35:23,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712281400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188510958] [2022-11-18 19:35:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:23,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:23,570 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:23,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:35:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:23,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:35:23,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:23,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:24,067 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:35:24,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2022-11-18 19:35:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:24,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:24,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-18 19:35:24,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 19:35:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:24,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188510958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:24,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:24,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2022-11-18 19:35:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990432805] [2022-11-18 19:35:24,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:35:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:35:24,657 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:25,058 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-18 19:35:25,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2022-11-18 19:35:25,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:25,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 29 states and 35 transitions. [2022-11-18 19:35:25,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-18 19:35:25,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-18 19:35:25,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2022-11-18 19:35:25,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:25,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-18 19:35:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2022-11-18 19:35:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-18 19:35:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-18 19:35:25,063 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-18 19:35:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:35:25,065 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-18 19:35:25,065 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 19:35:25,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2022-11-18 19:35:25,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:25,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:25,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:25,067 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:35:25,067 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:25,067 INFO L748 eck$LassoCheckResult]: Stem: 645#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 646#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 656#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 658#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 659#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 660#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 661#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 672#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 671#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 654#L511-2 [2022-11-18 19:35:25,068 INFO L750 eck$LassoCheckResult]: Loop: 654#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 670#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 669#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 668#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 667#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 665#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 662#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 663#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 666#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 657#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 655#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 652#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 653#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 654#L511-2 [2022-11-18 19:35:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1357299088, now seen corresponding path program 2 times [2022-11-18 19:35:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645960717] [2022-11-18 19:35:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:25,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:25,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 4 times [2022-11-18 19:35:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:25,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083834820] [2022-11-18 19:35:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:25,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:25,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash -149966363, now seen corresponding path program 2 times [2022-11-18 19:35:25,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833021175] [2022-11-18 19:35:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:25,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833021175] [2022-11-18 19:35:25,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833021175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:25,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107100740] [2022-11-18 19:35:25,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:25,722 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:25,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:35:25,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:25,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:35:25,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:25,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:26,536 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-11-18 19:35:26,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 33 [2022-11-18 19:35:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:26,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:26,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-11-18 19:35:27,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 150 [2022-11-18 19:35:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:27,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107100740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:27,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:27,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2022-11-18 19:35:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691643108] [2022-11-18 19:35:27,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:35:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:35:27,723 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. cyclomatic complexity: 8 Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:28,611 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-11-18 19:35:28,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2022-11-18 19:35:28,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:28,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 37 states and 45 transitions. [2022-11-18 19:35:28,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-11-18 19:35:28,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-11-18 19:35:28,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2022-11-18 19:35:28,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:28,614 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-18 19:35:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2022-11-18 19:35:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-18 19:35:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-11-18 19:35:28,626 INFO L240 hiAutomatonCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-18 19:35:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:35:28,628 INFO L428 stractBuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-18 19:35:28,631 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 19:35:28,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2022-11-18 19:35:28,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:28,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:28,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:28,632 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:28,633 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:28,633 INFO L748 eck$LassoCheckResult]: Stem: 904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 905#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 915#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 916#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 917#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 918#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 919#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 926#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 934#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 932#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 931#L512 assume !(strrchr_#t~mem2#1 == strrchr_~ch~0#1);havoc strrchr_#t~mem2#1; 929#L512-2 [2022-11-18 19:35:28,633 INFO L750 eck$LassoCheckResult]: Loop: 929#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 928#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 927#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 924#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 921#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 922#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 925#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 920#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 914#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 911#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 912#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 913#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 930#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 929#L512-2 [2022-11-18 19:35:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1305633483, now seen corresponding path program 2 times [2022-11-18 19:35:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:28,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508650385] [2022-11-18 19:35:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:28,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:28,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:28,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1358949434, now seen corresponding path program 5 times [2022-11-18 19:35:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:28,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622538748] [2022-11-18 19:35:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:28,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:28,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 900096902, now seen corresponding path program 2 times [2022-11-18 19:35:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:28,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712041673] [2022-11-18 19:35:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:28,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:29,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712041673] [2022-11-18 19:35:29,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712041673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141291905] [2022-11-18 19:35:29,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:29,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:29,250 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:29,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:35:29,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:29,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:29,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:35:29,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:29,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:29,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:35:29,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:35:29,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:35:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:29,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:30,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2022-11-18 19:35:30,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 85 [2022-11-18 19:35:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:30,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141291905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:30,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:30,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2022-11-18 19:35:30,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36143058] [2022-11-18 19:35:30,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:35:30,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:35:30,901 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. cyclomatic complexity: 10 Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:32,242 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-11-18 19:35:32,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 58 transitions. [2022-11-18 19:35:32,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:32,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 34 states and 41 transitions. [2022-11-18 19:35:32,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2022-11-18 19:35:32,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2022-11-18 19:35:32,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 41 transitions. [2022-11-18 19:35:32,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:32,245 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-18 19:35:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 41 transitions. [2022-11-18 19:35:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-18 19:35:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-11-18 19:35:32,248 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-11-18 19:35:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:35:32,249 INFO L428 stractBuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-11-18 19:35:32,249 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-18 19:35:32,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 37 transitions. [2022-11-18 19:35:32,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:32,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:32,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:32,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-18 19:35:32,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:32,252 INFO L748 eck$LassoCheckResult]: Stem: 1201#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1202#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1209#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 1211#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1212#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1213#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1214#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1228#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1227#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1226#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 1225#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 1208#L511-2 [2022-11-18 19:35:32,252 INFO L750 eck$LassoCheckResult]: Loop: 1208#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1224#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1223#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1222#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1221#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1219#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1216#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1217#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1220#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1215#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1210#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1206#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1207#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 1208#L511-2 [2022-11-18 19:35:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1305578254, now seen corresponding path program 3 times [2022-11-18 19:35:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:32,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126095127] [2022-11-18 19:35:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:32,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:32,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:32,277 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 6 times [2022-11-18 19:35:32,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:32,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457176675] [2022-11-18 19:35:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:32,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:32,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:32,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 590383555, now seen corresponding path program 3 times [2022-11-18 19:35:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542959109] [2022-11-18 19:35:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:32,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:32,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542959109] [2022-11-18 19:35:32,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542959109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:32,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719412773] [2022-11-18 19:35:32,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:35:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:32,765 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:32,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:35:32,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:35:32,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:35:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:33,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:34,000 INFO L321 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2022-11-18 19:35:34,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 40 [2022-11-18 19:35:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:34,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:34,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 71 [2022-11-18 19:35:34,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 169 [2022-11-18 19:35:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:35,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719412773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:35,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:35,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 44 [2022-11-18 19:35:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139698356] [2022-11-18 19:35:35,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:35:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:35:35,465 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. cyclomatic complexity: 9 Second operand has 44 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:36,539 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-18 19:35:36,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 60 transitions. [2022-11-18 19:35:36,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:36,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 55 transitions. [2022-11-18 19:35:36,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2022-11-18 19:35:36,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2022-11-18 19:35:36,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 55 transitions. [2022-11-18 19:35:36,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:36,551 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-11-18 19:35:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 55 transitions. [2022-11-18 19:35:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-11-18 19:35:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-18 19:35:36,562 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-18 19:35:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:35:36,566 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-18 19:35:36,566 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-18 19:35:36,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2022-11-18 19:35:36,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:36,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:36,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:36,568 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:36,568 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:36,568 INFO L748 eck$LassoCheckResult]: Stem: 1496#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1497#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1505#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 1508#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1509#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1510#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1511#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1532#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1533#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1536#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 1531#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 1528#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1527#L512 assume !(strrchr_#t~mem2#1 == strrchr_~ch~0#1);havoc strrchr_#t~mem2#1; 1526#L512-2 [2022-11-18 19:35:36,568 INFO L750 eck$LassoCheckResult]: Loop: 1526#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1524#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1522#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1517#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1520#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1519#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1515#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1507#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1506#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1503#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1504#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 1499#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1514#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1526#L512-2 [2022-11-18 19:35:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -530250729, now seen corresponding path program 3 times [2022-11-18 19:35:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:36,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215618582] [2022-11-18 19:35:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:36,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:36,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:36,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1358949434, now seen corresponding path program 7 times [2022-11-18 19:35:36,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:36,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770539719] [2022-11-18 19:35:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:36,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:36,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:36,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash -588203036, now seen corresponding path program 3 times [2022-11-18 19:35:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:36,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631757461] [2022-11-18 19:35:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631757461] [2022-11-18 19:35:37,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631757461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176033220] [2022-11-18 19:35:37,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:35:37,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:37,129 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:37,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:35:37,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:35:37,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:37,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:35:37,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:37,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 19:35:40,101 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 19:35:40,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 28 [2022-11-18 19:35:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:40,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:40,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 62 [2022-11-18 19:35:40,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:35:40,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 94 [2022-11-18 19:35:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:40,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176033220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:40,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:40,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2022-11-18 19:35:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564779925] [2022-11-18 19:35:40,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:41,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:35:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1205, Unknown=6, NotChecked=0, Total=1332 [2022-11-18 19:35:41,252 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. cyclomatic complexity: 12 Second operand has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:45,302 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-18 19:35:45,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 72 transitions. [2022-11-18 19:35:45,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:45,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 48 states and 58 transitions. [2022-11-18 19:35:45,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-18 19:35:45,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-11-18 19:35:45,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 58 transitions. [2022-11-18 19:35:45,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:45,304 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-18 19:35:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 58 transitions. [2022-11-18 19:35:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-11-18 19:35:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-18 19:35:45,307 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-18 19:35:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:35:45,309 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-18 19:35:45,309 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-18 19:35:45,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2022-11-18 19:35:45,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-18 19:35:45,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:35:45,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:35:45,310 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2022-11-18 19:35:45,310 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:45,311 INFO L748 eck$LassoCheckResult]: Stem: 1821#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1822#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet14#1, main_#t~malloc15#1.base, main_#t~malloc15#1.offset, main_#t~nondet17#1, main_#t~post16#1, main_~i~0#1, main_#t~nondet18#1, main_#t~ret19#1.base, main_#t~ret19#1.offset, main_~in_len~0#1, main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;main_~in_len~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1830#L521 assume !(main_~in_len~0#1 < 1);call main_#t~malloc15#1.base, main_#t~malloc15#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~in~0#1.base, main_~in~0#1.offset := main_#t~malloc15#1.base, main_#t~malloc15#1.offset;main_~i~0#1 := 0; 1832#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1833#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1834#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1835#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1857#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1858#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1861#L523-3 assume !!(main_~i~0#1 < main_~in_len~0#1 - 1);call write~int(main_#t~nondet17#1, main_~in~0#1.base, main_~in~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet17#1; 1860#L523-2 main_#t~post16#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post16#1;havoc main_#t~post16#1; 1859#L523-3 assume !(main_~i~0#1 < main_~in_len~0#1 - 1); 1823#L523-4 call write~int(0, main_~in~0#1.base, main_~in~0#1.offset + (main_~in_len~0#1 - 1), 1);main_~the_int~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;assume { :begin_inline_strrchr } true;strrchr_#in~t#1.base, strrchr_#in~t#1.offset, strrchr_#in~c#1 := main_~in~0#1.base, main_~in~0#1.offset, main_~the_int~0#1;havoc strrchr_#res#1.base, strrchr_#res#1.offset;havoc strrchr_#t~mem2#1, strrchr_#t~mem3#1, strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset, strrchr_#t~mem5#1, strrchr_#t~mem6#1, strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset, strrchr_#t~mem8#1, strrchr_#t~mem9#1, strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset, strrchr_#t~mem11#1, strrchr_#t~mem12#1, strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset, strrchr_~t#1.base, strrchr_~t#1.offset, strrchr_~c#1, strrchr_~ch~0#1, strrchr_~l~0#1.base, strrchr_~l~0#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_#in~t#1.base, strrchr_#in~t#1.offset;strrchr_~c#1 := strrchr_#in~c#1;havoc strrchr_~ch~0#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := 0, 0;strrchr_~ch~0#1 := (if strrchr_~c#1 % 256 <= 127 then strrchr_~c#1 % 256 else strrchr_~c#1 % 256 - 256); 1824#L511-2 [2022-11-18 19:35:45,311 INFO L750 eck$LassoCheckResult]: Loop: 1824#L511-2 assume !false;call strrchr_#t~mem2#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1839#L512 assume strrchr_#t~mem2#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem2#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1851#L512-2 call strrchr_#t~mem3#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1849#L512-3 assume !(0 == strrchr_#t~mem3#1);havoc strrchr_#t~mem3#1;strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre4#1.base, strrchr_#t~pre4#1.offset;call strrchr_#t~mem5#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1847#L513 assume strrchr_#t~mem5#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem5#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1842#L513-2 call strrchr_#t~mem6#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1845#L513-3 assume !(0 == strrchr_#t~mem6#1);havoc strrchr_#t~mem6#1;strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre7#1.base, strrchr_#t~pre7#1.offset;call strrchr_#t~mem8#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1844#L514 assume strrchr_#t~mem8#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem8#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1840#L514-2 call strrchr_#t~mem9#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1836#L514-3 assume !(0 == strrchr_#t~mem9#1);havoc strrchr_#t~mem9#1;strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre10#1.base, strrchr_#t~pre10#1.offset;call strrchr_#t~mem11#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1831#L515 assume strrchr_#t~mem11#1 == strrchr_~ch~0#1;havoc strrchr_#t~mem11#1;strrchr_~l~0#1.base, strrchr_~l~0#1.offset := strrchr_~t#1.base, strrchr_~t#1.offset; 1828#L515-2 call strrchr_#t~mem12#1 := read~int(strrchr_~t#1.base, strrchr_~t#1.offset, 1); 1829#L515-3 assume !(0 == strrchr_#t~mem12#1);havoc strrchr_#t~mem12#1;strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;strrchr_~t#1.base, strrchr_~t#1.offset := strrchr_~t#1.base, 1 + strrchr_~t#1.offset;havoc strrchr_#t~pre13#1.base, strrchr_#t~pre13#1.offset; 1824#L511-2 [2022-11-18 19:35:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash -530195500, now seen corresponding path program 4 times [2022-11-18 19:35:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:45,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866103300] [2022-11-18 19:35:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 964144916, now seen corresponding path program 8 times [2022-11-18 19:35:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:45,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069675251] [2022-11-18 19:35:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash -897916383, now seen corresponding path program 4 times [2022-11-18 19:35:45,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244616696] [2022-11-18 19:35:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:35:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:35:45,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:35:47,206 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:35:47,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:35:47,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:35:47,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:35:47,206 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:35:47,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:47,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:35:47,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:35:47,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: strrchr.i_Iteration9_Lasso [2022-11-18 19:35:47,206 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:35:47,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:35:47,210 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,216 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,221 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,227 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,230 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,233 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,236 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,238 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,241 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,244 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,247 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,250 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,253 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:47,255 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,154 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,156 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,160 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,166 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,169 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,172 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,175 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,177 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,183 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:48,193 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:35:49,098 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:35:49,098 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:35:49,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,103 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 19:35:49,105 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 [2022-11-18 19:35:49,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,146 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,158 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,172 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 [2022-11-18 19:35:49,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 19:35:49,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-18 19:35:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,207 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 19:35:49,215 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 [2022-11-18 19:35:49,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,261 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 19:35:49,264 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 [2022-11-18 19:35:49,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,277 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,284 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 19:35:49,292 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 [2022-11-18 19:35:49,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,310 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,320 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,327 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 [2022-11-18 19:35:49,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 19:35:49,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,341 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:49,341 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:49,345 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,349 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 19:35:49,353 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 [2022-11-18 19:35:49,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,367 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-18 19:35:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,372 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 19:35:49,375 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 [2022-11-18 19:35:49,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,389 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,396 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 19:35:49,400 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 [2022-11-18 19:35:49,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,411 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,414 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,428 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 19:35:49,431 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 [2022-11-18 19:35:49,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,443 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,452 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 19:35:49,455 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 [2022-11-18 19:35:49,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,487 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,492 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 19:35:49,499 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 [2022-11-18 19:35:49,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,512 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,520 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 19:35:49,523 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 [2022-11-18 19:35:49,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-11-18 19:35:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,551 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-18 19:35:49,555 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 [2022-11-18 19:35:49,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,569 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,574 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-18 19:35:49,578 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 [2022-11-18 19:35:49,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:35:49,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:35:49,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:35:49,593 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,602 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-18 19:35:49,615 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 [2022-11-18 19:35:49,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,639 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:49,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:49,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,668 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-18 19:35:49,679 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 [2022-11-18 19:35:49,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,701 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:49,701 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:49,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:35:49,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,731 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-18 19:35:49,741 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 [2022-11-18 19:35:49,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:35:49,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:35:49,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:35:49,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:35:49,770 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 19:35:49,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 19:35:49,793 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:35:49,923 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2022-11-18 19:35:49,924 INFO L444 ModelExtractionUtils]: 17 out of 34 variables were initially zero. Simplification set additionally 14 variables to zero. [2022-11-18 19:35:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:35:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:49,928 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:49,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-18 19:35:49,930 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:35:49,952 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-11-18 19:35:49,953 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:35:49,953 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~in~0#1.base)_2, ULTIMATE.start_strrchr_~t#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~in~0#1.base)_2 - 1*ULTIMATE.start_strrchr_~t#1.offset Supporting invariants [] [2022-11-18 19:35:49,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:49,998 INFO L156 tatePredicateManager]: 8 out of 10 supporting invariants were superfluous and have been removed [2022-11-18 19:35:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:35:50,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:35:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:50,311 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-18 19:35:50,312 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 12 Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:50,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 12. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 62 states and 84 transitions. Complement of second has 7 states. [2022-11-18 19:35:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 19:35:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-11-18 19:35:50,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 13 letters. Loop has 13 letters. [2022-11-18 19:35:50,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:50,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 26 letters. Loop has 13 letters. [2022-11-18 19:35:50,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:50,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 13 letters. Loop has 26 letters. [2022-11-18 19:35:50,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:35:50,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2022-11-18 19:35:50,427 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 19:35:50,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 0 states and 0 transitions. [2022-11-18 19:35:50,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 19:35:50,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 19:35:50,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 19:35:50,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:50,429 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:35:50,429 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:35:50,429 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:35:50,429 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-18 19:35:50,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-18 19:35:50,429 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 19:35:50,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-18 19:35:50,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 07:35:50 BoogieIcfgContainer [2022-11-18 19:35:50,438 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 19:35:50,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:35:50,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:35:50,439 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:35:50,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:15" (3/4) ... [2022-11-18 19:35:50,443 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 19:35:50,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:35:50,444 INFO L158 Benchmark]: Toolchain (without parser) took 35794.34ms. Allocated memory was 98.6MB in the beginning and 299.9MB in the end (delta: 201.3MB). Free memory was 63.5MB in the beginning and 125.8MB in the end (delta: -62.3MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,445 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 70.2MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:35:50,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.26ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 68.1MB in the end (delta: -4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.40ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 66.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,446 INFO L158 Benchmark]: Boogie Preprocessor took 62.02ms. Allocated memory is still 98.6MB. Free memory was 66.0MB in the beginning and 64.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,446 INFO L158 Benchmark]: RCFGBuilder took 518.25ms. Allocated memory is still 98.6MB. Free memory was 64.6MB in the beginning and 51.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,447 INFO L158 Benchmark]: BuchiAutomizer took 34524.21ms. Allocated memory was 98.6MB in the beginning and 299.9MB in the end (delta: 201.3MB). Free memory was 51.3MB in the beginning and 126.8MB in the end (delta: -75.5MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. [2022-11-18 19:35:50,447 INFO L158 Benchmark]: Witness Printer took 5.04ms. Allocated memory is still 299.9MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:35:50,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 70.2MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.26ms. Allocated memory is still 98.6MB. Free memory was 63.3MB in the beginning and 68.1MB in the end (delta: -4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.40ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 66.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.02ms. Allocated memory is still 98.6MB. Free memory was 66.0MB in the beginning and 64.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.25ms. Allocated memory is still 98.6MB. Free memory was 64.6MB in the beginning and 51.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 34524.21ms. Allocated memory was 98.6MB in the beginning and 299.9MB in the end (delta: 201.3MB). Free memory was 51.3MB in the beginning and 126.8MB in the end (delta: -75.5MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. * Witness Printer took 5.04ms. Allocated memory is still 299.9MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 1.0MB). 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 9 terminating modules (7 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + in_len and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[in] + -1 * t and consists of 5 locations. 7 modules have a trivial ranking function, the largest among these consists of 44 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.4s and 10 iterations. TraceHistogramMax:4. Analysis of lassos took 24.9s. Construction of modules took 1.4s. Büchi inclusion checks took 7.8s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 301 mSDsluCounter, 1058 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 424 IncrementalHoareTripleChecker+Unchecked, 917 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1596 IncrementalHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 141 mSDtfsCounter, 1596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc7 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital158 mio100 ax100 hnf100 lsp98 ukn85 mio100 lsp49 div161 bol100 ite100 ukn100 eq161 hnf92 smp73 dnf160 smp85 tf100 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 61ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-18 19:35:50,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-11-18 19:35:50,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:50,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 19:35:51,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 19:35:51,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:51,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:51,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:51,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bea2abae-53d7-4926-835d-a30a4eb7206b/bin/uautomizer-TMbwUNV5ro/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 Result: TRUE