./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b 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_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- [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-6b4ec56 [2022-11-20 10:49:52,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:52,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:52,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:52,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:52,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:52,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:52,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:52,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:52,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:52,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:52,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:52,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:52,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:52,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:52,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:52,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:52,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:52,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:52,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:52,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:52,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:52,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:52,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:52,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:52,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:52,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:52,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:52,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:52,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:52,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:52,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:52,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:52,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:52,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:52,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:52,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:52,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:52,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:52,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:52,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:52,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 10:49:52,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:52,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:52,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:52,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:52,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:52,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:52,291 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:52,292 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:49:52,292 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:49:52,292 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:49:52,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:49:52,293 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:49:52,293 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:49:52,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:52,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:52,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:52,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:52,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:52,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:52,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:49:52,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:49:52,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:49:52,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:52,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:49:52,296 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:49:52,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:52,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:49:52,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:52,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:52,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:52,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:52,298 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:49:52,299 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_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2022-11-20 10:49:52,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:52,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:52,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:52,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:52,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:52,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-11-20 10:49:55,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:55,960 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:55,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-11-20 10:49:55,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/data/5f7872c92/77fde3c08f714af39f64e1e10ab56e24/FLAG1c1ea76fe [2022-11-20 10:49:55,989 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/data/5f7872c92/77fde3c08f714af39f64e1e10ab56e24 [2022-11-20 10:49:55,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:55,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:55,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:55,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:55,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:55,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:55" (1/1) ... [2022-11-20 10:49:56,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3792bbb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56, skipping insertion in model container [2022-11-20 10:49:56,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:55" (1/1) ... [2022-11-20 10:49:56,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:56,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:56,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-11-20 10:49:56,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:56,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:56,232 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2022-11-20 10:49:56,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:56,246 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:56,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56 WrapperNode [2022-11-20 10:49:56,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:56,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:56,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:56,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:56,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,278 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-11-20 10:49:56,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:56,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:56,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:56,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:56,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:56,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:56,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:56,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:56,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (1/1) ... [2022-11-20 10:49:56,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:56,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:56,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:49:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:56,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:56,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:56,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:56,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:49:56,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:49:56,674 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:49:56,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:56 BoogieIcfgContainer [2022-11-20 10:49:56,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:49:56,682 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:49:56,683 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:49:56,686 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:49:56,687 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:49:56,688 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:49:55" (1/3) ... [2022-11-20 10:49:56,689 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@738e3cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:49:56, skipping insertion in model container [2022-11-20 10:49:56,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:49:56,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:56" (2/3) ... [2022-11-20 10:49:56,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@738e3cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:49:56, skipping insertion in model container [2022-11-20 10:49:56,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:49:56,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:56" (3/3) ... [2022-11-20 10:49:56,693 INFO L332 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-11-20 10:49:56,770 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:49:56,771 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:49:56,771 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:49:56,771 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:49:56,771 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:49:56,771 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:49:56,771 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:49:56,772 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:49:56,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:56,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 10:49:56,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:49:56,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:49:56,801 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:49:56,802 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-20 10:49:56,802 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:49:56,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:56,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 10:49:56,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:49:56,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:49:56,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:49:56,808 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-20 10:49:56,817 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;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 6#L111true [2022-11-20 10:49:56,817 INFO L750 eck$LassoCheckResult]: Loop: 6#L111true assume !false; 4#L30true assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 12#L36true assume 8466 == main_~s__state~0#1; 14#L37true assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 17#L69-1true assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 6#L111true [2022-11-20 10:49:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:56,829 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 10:49:56,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717115078] [2022-11-20 10:49:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:56,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:57,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2022-11-20 10:49:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:57,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237418869] [2022-11-20 10:49:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:57,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:57,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:57,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:57,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2022-11-20 10:49:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:57,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145976516] [2022-11-20 10:49:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:57,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:57,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:57,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:57,199 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:57,200 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:57,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:57,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:57,201 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:49:57,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:57,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:57,202 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-11-20 10:49:57,202 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:57,202 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:57,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,274 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,285 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,365 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:57,366 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:49:57,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:57,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:57,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:57,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:57,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 10:49:57,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:57,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:57,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:57,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 10:49:57,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:49:57,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:57,469 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:49:57,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:57,476 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:57,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:57,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:57,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:57,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:49:57,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:57,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:57,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2022-11-20 10:49:57,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:57,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:57,478 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,490 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,499 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:57,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:57,575 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:49:57,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:57,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:57,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:49:57,591 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 [2022-11-20 10:49:57,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:57,605 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:57,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:57,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:49:57,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:57,608 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:49:57,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:57,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:49:57,625 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:49:57,625 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:49:57,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:57,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:57,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:57,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:49:57,653 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:49:57,654 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:49:57,654 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:49:57,655 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0#1) = -1*ULTIMATE.start_main_~blastFlag~0#1 + 1 Supporting invariants [] [2022-11-20 10:49:57,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:57,664 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:49:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:57,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:49:57,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:57,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:49:57,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:57,870 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 [2022-11-20 10:49:57,872 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,951 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2022-11-20 10:49:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 10:49:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2022-11-20 10:49:57,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2022-11-20 10:49:57,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:57,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2022-11-20 10:49:57,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:57,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2022-11-20 10:49:57,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:57,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2022-11-20 10:49:57,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 10:49:57,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2022-11-20 10:49:57,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-11-20 10:49:57,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-20 10:49:57,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2022-11-20 10:49:57,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:49:57,975 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 59 transitions. [2022-11-20 10:49:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2022-11-20 10:49:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-20 10:49:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2022-11-20 10:49:58,005 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-11-20 10:49:58,005 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-11-20 10:49:58,006 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:49:58,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2022-11-20 10:49:58,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 10:49:58,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:49:58,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:49:58,007 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:49:58,008 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-20 10:49:58,008 INFO L748 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 124#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 147#L111 assume !false; 119#L30 [2022-11-20 10:49:58,008 INFO L750 eck$LassoCheckResult]: Loop: 119#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 120#L36 assume 8466 == main_~s__state~0#1; 143#L37 assume !(0 == main_~blastFlag~0#1); 150#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 129#L111 assume !false; 119#L30 [2022-11-20 10:49:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-20 10:49:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187240822] [2022-11-20 10:49:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2022-11-20 10:49:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722335827] [2022-11-20 10:49:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2022-11-20 10:49:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191220064] [2022-11-20 10:49:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:58,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191220064] [2022-11-20 10:49:58,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191220064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:58,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:58,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487143572] [2022-11-20 10:49:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:58,169 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:58,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:58,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:58,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:58,169 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:49:58,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:58,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:58,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-11-20 10:49:58,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:58,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:58,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,181 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:58,238 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:49:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:58,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:49:58,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:49:58,277 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:49:58,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:49:58,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:58,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:58,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:49:58,309 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0#1=0} Honda state: {ULTIMATE.start_main_~s__hit~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:49:58,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:58,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:49:58,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-20 10:49:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:49:58,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:49:58,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:58,376 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:49:58,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,407 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:58,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:58,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:58,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:58,408 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:49:58,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:58,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:58,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2022-11-20 10:49:58,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:58,408 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:58,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,417 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,421 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:58,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:58,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:49:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:49:58,527 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 [2022-11-20 10:49:58,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:58,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:58,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:58,540 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 10:49:58,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:58,541 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 10:49:58,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:58,558 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:49:58,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:49:58,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:49:58,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:58,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:58,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:58,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:49:58,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:58,596 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:49:58,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:58,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:49:58,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 10:49:58,625 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 [2022-11-20 10:49:58,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:58,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:58,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:58,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:49:58,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:58,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:49:58,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:58,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:49:58,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:49:58,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:49:58,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:58,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:58,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:58,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:49:58,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:49:58,656 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:49:58,656 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:49:58,656 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8489 Supporting invariants [] [2022-11-20 10:49:58,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:58,661 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:49:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:49:58,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:49:58,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,765 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:49:58,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2022-11-20 10:49:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:49:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-11-20 10:49:58,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2022-11-20 10:49:58,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:58,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2022-11-20 10:49:58,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:58,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2022-11-20 10:49:58,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:58,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2022-11-20 10:49:58,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 10:49:58,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2022-11-20 10:49:58,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2022-11-20 10:49:58,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2022-11-20 10:49:58,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2022-11-20 10:49:58,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:49:58,851 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 121 transitions. [2022-11-20 10:49:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2022-11-20 10:49:58,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2022-11-20 10:49:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2022-11-20 10:49:58,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 86 transitions. [2022-11-20 10:49:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:58,864 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:58,898 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2022-11-20 10:49:58,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2022-11-20 10:49:58,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-20 10:49:58,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2022-11-20 10:49:58,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2022-11-20 10:49:58,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2022-11-20 10:49:58,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2022-11-20 10:49:58,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:49:58,903 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 125 transitions. [2022-11-20 10:49:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2022-11-20 10:49:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-11-20 10:49:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2022-11-20 10:49:58,909 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-11-20 10:49:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:58,911 INFO L428 stractBuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2022-11-20 10:49:58,911 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:49:58,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2022-11-20 10:49:58,912 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-20 10:49:58,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:49:58,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:49:58,913 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:49:58,913 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:49:58,914 INFO L748 eck$LassoCheckResult]: Stem: 457#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 458#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 479#L111 assume !false; 453#L30 [2022-11-20 10:49:58,914 INFO L750 eck$LassoCheckResult]: Loop: 453#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 454#L36 assume !(8466 == main_~s__state~0#1); 476#L41 assume 8512 == main_~s__state~0#1; 480#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 474#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 463#L111 assume !false; 453#L30 [2022-11-20 10:49:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2022-11-20 10:49:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805441318] [2022-11-20 10:49:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2022-11-20 10:49:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834021360] [2022-11-20 10:49:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:58,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2022-11-20 10:49:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907360932] [2022-11-20 10:49:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:58,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907360932] [2022-11-20 10:49:58,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907360932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:58,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:58,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480216754] [2022-11-20 10:49:58,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:59,003 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:59,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:59,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:59,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:59,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:49:59,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:59,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:59,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-11-20 10:49:59,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:59,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:59,006 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,011 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,111 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:59,111 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:49:59,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:49:59,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:59,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:59,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:49:59,201 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0#1=2} Honda state: {ULTIMATE.start_main_~blastFlag~0#1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:49:59,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,215 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:49:59,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:59,227 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:59,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:49:59,259 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=-4, ULTIMATE.start_main_~tmp___1~0#1=-4} Honda state: {ULTIMATE.start_main_#t~nondet5#1=-4, ULTIMATE.start_main_~tmp___1~0#1=-4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:49:59,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:49:59,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:59,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:49:59,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,306 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:49:59,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:49:59,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:49:59,346 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:49:59,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,355 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:49:59,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:49:59,356 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:49:59,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:49:59,356 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:49:59,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:49:59,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:49:59,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2022-11-20 10:49:59,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:49:59,356 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:49:59,357 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,368 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,374 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:49:59,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:49:59,430 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:49:59,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,434 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,443 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 [2022-11-20 10:49:59,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:59,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:59,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 10:49:59,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:59,458 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 10:49:59,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:59,461 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 10:49:59,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:59,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:49:59,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,501 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 [2022-11-20 10:49:59,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:59,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:59,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:59,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:49:59,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:59,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:49:59,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:59,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:49:59,524 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:49:59,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,528 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:49:59,535 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 [2022-11-20 10:49:59,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:49:59,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:49:59,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:49:59,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:49:59,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:49:59,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:49:59,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:49:59,578 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:49:59,581 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 10:49:59,581 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:49:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:49:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,583 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:49:59,594 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:49:59,594 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:49:59,594 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:49:59,594 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-11-20 10:49:59,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,603 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:49:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:59,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:49:59,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:59,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:49:59,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:59,699 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:49:59,701 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,806 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2022-11-20 10:49:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 10:49:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-11-20 10:49:59,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-20 10:49:59,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:59,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-20 10:49:59,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:59,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2022-11-20 10:49:59,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:49:59,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2022-11-20 10:49:59,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-11-20 10:49:59,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2022-11-20 10:49:59,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2022-11-20 10:49:59,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2022-11-20 10:49:59,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2022-11-20 10:49:59,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:49:59,832 INFO L218 hiAutomatonCegarLoop]: Abstraction has 141 states and 196 transitions. [2022-11-20 10:49:59,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2022-11-20 10:49:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2022-11-20 10:49:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2022-11-20 10:49:59,846 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 148 transitions. [2022-11-20 10:49:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:59,849 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:59,871 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2022-11-20 10:49:59,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2022-11-20 10:49:59,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-11-20 10:49:59,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2022-11-20 10:49:59,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-11-20 10:49:59,874 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-20 10:49:59,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2022-11-20 10:49:59,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:49:59,874 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-20 10:49:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2022-11-20 10:49:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-20 10:49:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2022-11-20 10:49:59,878 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-20 10:49:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:59,879 INFO L428 stractBuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2022-11-20 10:49:59,880 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:49:59,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2022-11-20 10:49:59,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2022-11-20 10:49:59,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:49:59,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:49:59,881 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:59,881 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:49:59,882 INFO L748 eck$LassoCheckResult]: Stem: 938#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 939#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 944#L111 assume !false; 945#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 965#L36 assume 8466 == main_~s__state~0#1; 966#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 984#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 980#L111 assume !false; 979#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 977#L36 assume !(8466 == main_~s__state~0#1); 972#L41 [2022-11-20 10:49:59,882 INFO L750 eck$LassoCheckResult]: Loop: 972#L41 assume 8512 == main_~s__state~0#1; 967#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 958#L81 assume !(0 != main_~tmp___1~0#1);main_~s__state~0#1 := 8640; 960#L111 assume !false; 934#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 935#L36 assume !(8466 == main_~s__state~0#1); 972#L41 [2022-11-20 10:49:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2022-11-20 10:49:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:59,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450550548] [2022-11-20 10:49:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:59,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:59,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:59,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2022-11-20 10:49:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213282789] [2022-11-20 10:49:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:59,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:59,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2022-11-20 10:49:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:59,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911372359] [2022-11-20 10:49:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:59,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911372359] [2022-11-20 10:49:59,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911372359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:59,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:59,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:59,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536025972] [2022-11-20 10:49:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,001 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:50:00,002 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:50:00,002 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:50:00,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:50:00,002 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:50:00,002 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,002 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:50:00,002 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:50:00,002 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-11-20 10:50:00,003 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:50:00,003 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:50:00,004 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:00,009 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:00,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:50:00,046 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:50:00,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,047 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:50:00,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:50:00,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:50:00,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:50:00,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0, ULTIMATE.start_main_~tmp___1~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:50:00,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,097 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:50:00,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:50:00,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 10:50:00,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,145 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:50:00,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:50:00,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:50:00,190 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:50:00,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,199 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:50:00,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:50:00,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:50:00,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:50:00,199 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:50:00,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:50:00,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:50:00,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2022-11-20 10:50:00,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:50:00,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:50:00,201 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:00,206 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:00,243 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:50:00,244 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:50:00,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,245 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,248 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 [2022-11-20 10:50:00,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:50:00,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:50:00,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:50:00,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:50:00,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:50:00,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:50:00,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:50:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:50:00,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:50:00,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,282 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,288 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 [2022-11-20 10:50:00,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 10:50:00,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:50:00,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:50:00,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:50:00,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:50:00,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:50:00,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:50:00,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:50:00,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:50:00,330 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:50:00,331 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:50:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,332 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:50:00,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:50:00,336 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:50:00,336 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = -1*ULTIMATE.start_main_~s__state~0#1 + 8576 Supporting invariants [] [2022-11-20 10:50:00,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 10:50:00,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,341 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:50:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:50:00,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:00,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,435 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 10:50:00,435 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2022-11-20 10:50:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-20 10:50:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2022-11-20 10:50:00,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2022-11-20 10:50:00,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:00,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2022-11-20 10:50:00,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:00,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2022-11-20 10:50:00,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:00,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2022-11-20 10:50:00,532 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2022-11-20 10:50:00,537 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2022-11-20 10:50:00,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-11-20 10:50:00,538 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-20 10:50:00,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2022-11-20 10:50:00,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,538 INFO L218 hiAutomatonCegarLoop]: Abstraction has 163 states and 245 transitions. [2022-11-20 10:50:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2022-11-20 10:50:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2022-11-20 10:50:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2022-11-20 10:50:00,555 INFO L240 hiAutomatonCegarLoop]: Abstraction has 125 states and 183 transitions. [2022-11-20 10:50:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:00,556 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,593 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2022-11-20 10:50:00,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2022-11-20 10:50:00,597 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2022-11-20 10:50:00,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2022-11-20 10:50:00,599 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2022-11-20 10:50:00,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-20 10:50:00,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2022-11-20 10:50:00,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,601 INFO L218 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-20 10:50:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2022-11-20 10:50:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2022-11-20 10:50:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2022-11-20 10:50:00,615 INFO L240 hiAutomatonCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-11-20 10:50:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:00,616 INFO L428 stractBuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2022-11-20 10:50:00,616 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:50:00,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2022-11-20 10:50:00,617 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2022-11-20 10:50:00,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:00,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:00,618 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,618 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,618 INFO L748 eck$LassoCheckResult]: Stem: 1548#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1549#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1573#L111 assume !false; 1675#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1674#L36 assume 8466 == main_~s__state~0#1; 1643#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1641#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1554#L111 [2022-11-20 10:50:00,619 INFO L750 eck$LassoCheckResult]: Loop: 1554#L111 assume !false; 1544#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1545#L36 assume !(8466 == main_~s__state~0#1); 1571#L41 assume !(8512 == main_~s__state~0#1); 1586#L57 assume !(8640 == main_~s__state~0#1); 1550#L61 assume 8656 == main_~s__state~0#1; 1551#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1560#L100-1 assume 4 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 5; 1562#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1568#L111 assume !false; 1618#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1619#L36 assume 8466 == main_~s__state~0#1; 1576#L37 assume !(0 == main_~blastFlag~0#1); 1577#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1554#L111 [2022-11-20 10:50:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2022-11-20 10:50:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118141695] [2022-11-20 10:50:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2022-11-20 10:50:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991860860] [2022-11-20 10:50:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991860860] [2022-11-20 10:50:00,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991860860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:00,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086930677] [2022-11-20 10:50:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,653 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:50:00,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:00,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:00,654 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,677 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2022-11-20 10:50:00,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2022-11-20 10:50:00,679 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-11-20 10:50:00,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2022-11-20 10:50:00,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2022-11-20 10:50:00,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-11-20 10:50:00,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2022-11-20 10:50:00,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,681 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-20 10:50:00,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2022-11-20 10:50:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-20 10:50:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2022-11-20 10:50:00,685 INFO L240 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-20 10:50:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:00,686 INFO L428 stractBuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2022-11-20 10:50:00,687 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 10:50:00,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2022-11-20 10:50:00,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2022-11-20 10:50:00,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:00,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:00,689 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,689 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,689 INFO L748 eck$LassoCheckResult]: Stem: 1870#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 1871#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 1876#L111 assume !false; 1877#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1993#L36 assume 8466 == main_~s__state~0#1; 1990#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 1987#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1938#L111 [2022-11-20 10:50:00,689 INFO L750 eck$LassoCheckResult]: Loop: 1938#L111 assume !false; 1955#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1953#L36 assume !(8466 == main_~s__state~0#1); 1950#L41 assume !(8512 == main_~s__state~0#1); 1947#L57 assume !(8640 == main_~s__state~0#1); 1872#L61 assume 8656 == main_~s__state~0#1; 1873#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 1879#L100-1 assume !(4 == main_~blastFlag~0#1); 1880#L107 assume !(5 == main_~blastFlag~0#1); 1917#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 1918#L111 assume !false; 1976#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 1977#L36 assume 8466 == main_~s__state~0#1; 1963#L37 assume !(0 == main_~blastFlag~0#1); 1960#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 1938#L111 [2022-11-20 10:50:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2022-11-20 10:50:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801406479] [2022-11-20 10:50:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2022-11-20 10:50:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170150858] [2022-11-20 10:50:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170150858] [2022-11-20 10:50:00,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170150858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:00,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72104638] [2022-11-20 10:50:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,724 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:50:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:00,725 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,748 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2022-11-20 10:50:00,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2022-11-20 10:50:00,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-11-20 10:50:00,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2022-11-20 10:50:00,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2022-11-20 10:50:00,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-11-20 10:50:00,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2022-11-20 10:50:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,751 INFO L218 hiAutomatonCegarLoop]: Abstraction has 111 states and 141 transitions. [2022-11-20 10:50:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2022-11-20 10:50:00,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-11-20 10:50:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2022-11-20 10:50:00,754 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-11-20 10:50:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:00,755 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2022-11-20 10:50:00,755 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 10:50:00,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2022-11-20 10:50:00,756 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2022-11-20 10:50:00,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:00,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:00,757 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,757 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,757 INFO L748 eck$LassoCheckResult]: Stem: 2211#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2229#L111 assume !false; 2296#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2231#L36 assume 8466 == main_~s__state~0#1; 2232#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2263#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2250#L111 [2022-11-20 10:50:00,757 INFO L750 eck$LassoCheckResult]: Loop: 2250#L111 assume !false; 2304#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2301#L36 assume !(8466 == main_~s__state~0#1); 2299#L41 assume !(8512 == main_~s__state~0#1); 2248#L57 assume !(8640 == main_~s__state~0#1); 2217#L61 assume 8656 == main_~s__state~0#1; 2218#L62 assume 2 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 3; 2223#L100-1 assume !(4 == main_~blastFlag~0#1); 2224#L107 assume !(5 == main_~blastFlag~0#1); 2239#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2219#L111 assume !false; 2213#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2214#L36 assume !(8466 == main_~s__state~0#1); 2230#L41 assume !(8512 == main_~s__state~0#1); 2240#L57 assume 8640 == main_~s__state~0#1; 2298#L58 assume !(3 == main_~blastFlag~0#1); 2249#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2250#L111 [2022-11-20 10:50:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2022-11-20 10:50:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044222542] [2022-11-20 10:50:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2022-11-20 10:50:00,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543503755] [2022-11-20 10:50:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543503755] [2022-11-20 10:50:00,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543503755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510155045] [2022-11-20 10:50:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,790 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:50:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:00,791 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,810 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2022-11-20 10:50:00,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2022-11-20 10:50:00,811 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-11-20 10:50:00,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2022-11-20 10:50:00,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-20 10:50:00,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2022-11-20 10:50:00,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2022-11-20 10:50:00,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,813 INFO L218 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-20 10:50:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2022-11-20 10:50:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-20 10:50:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2022-11-20 10:50:00,832 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-20 10:50:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:00,837 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-20 10:50:00,837 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 10:50:00,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2022-11-20 10:50:00,838 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2022-11-20 10:50:00,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:00,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:00,838 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,839 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,839 INFO L748 eck$LassoCheckResult]: Stem: 2438#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2439#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2446#L111 assume !false; 2442#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2443#L36 assume 8466 == main_~s__state~0#1; 2459#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2490#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2476#L111 [2022-11-20 10:50:00,839 INFO L750 eck$LassoCheckResult]: Loop: 2476#L111 assume !false; 2440#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2441#L36 assume !(8466 == main_~s__state~0#1); 2458#L41 assume !(8512 == main_~s__state~0#1); 2468#L57 assume !(8640 == main_~s__state~0#1); 2474#L61 assume 8656 == main_~s__state~0#1; 2505#L62 assume !(2 == main_~blastFlag~0#1); 2452#L100-1 assume !(4 == main_~blastFlag~0#1); 2453#L107 assume !(5 == main_~blastFlag~0#1); 2467#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2473#L111 assume !false; 2533#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2531#L36 assume !(8466 == main_~s__state~0#1); 2508#L41 assume !(8512 == main_~s__state~0#1); 2506#L57 assume 8640 == main_~s__state~0#1; 2507#L58 assume !(3 == main_~blastFlag~0#1); 2475#L89-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8656; 2476#L111 [2022-11-20 10:50:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2022-11-20 10:50:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747177066] [2022-11-20 10:50:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2022-11-20 10:50:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880066502] [2022-11-20 10:50:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880066502] [2022-11-20 10:50:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880066502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545025258] [2022-11-20 10:50:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,880 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:50:00,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:00,881 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,890 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2022-11-20 10:50:00,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2022-11-20 10:50:00,891 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-20 10:50:00,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2022-11-20 10:50:00,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-11-20 10:50:00,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2022-11-20 10:50:00,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2022-11-20 10:50:00,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:00,893 INFO L218 hiAutomatonCegarLoop]: Abstraction has 137 states and 167 transitions. [2022-11-20 10:50:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2022-11-20 10:50:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2022-11-20 10:50:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2022-11-20 10:50:00,896 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-11-20 10:50:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:00,897 INFO L428 stractBuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2022-11-20 10:50:00,897 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-20 10:50:00,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2022-11-20 10:50:00,898 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-20 10:50:00,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:00,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:00,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,899 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,899 INFO L748 eck$LassoCheckResult]: Stem: 2702#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 2703#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 2722#L111 assume !false; 2793#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2792#L36 assume 8466 == main_~s__state~0#1; 2760#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 2757#L69-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8656; 2710#L111 [2022-11-20 10:50:00,900 INFO L750 eck$LassoCheckResult]: Loop: 2710#L111 assume !false; 2704#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 2705#L36 assume !(8466 == main_~s__state~0#1); 2723#L41 assume !(8512 == main_~s__state~0#1); 2733#L57 assume !(8640 == main_~s__state~0#1); 2740#L61 assume 8656 == main_~s__state~0#1; 2805#L62 assume !(2 == main_~blastFlag~0#1); 2716#L100-1 assume !(4 == main_~blastFlag~0#1); 2717#L107 assume !(5 == main_~blastFlag~0#1); 2739#L104-1 assume 0 != main_~s__hit~0#1;main_~s__state~0#1 := 8640; 2710#L111 [2022-11-20 10:50:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2022-11-20 10:50:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556103738] [2022-11-20 10:50:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2022-11-20 10:50:00,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12703884] [2022-11-20 10:50:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:00,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2022-11-20 10:50:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956302503] [2022-11-20 10:50:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956302503] [2022-11-20 10:50:00,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956302503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214675561] [2022-11-20 10:50:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:01,007 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:50:01,007 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:50:01,007 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:50:01,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:50:01,008 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:50:01,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:50:01,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:50:01,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-11-20 10:50:01,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:50:01,008 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:50:01,010 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,016 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,020 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,113 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:50:01,114 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:50:01,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:01,115 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:01,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:50:01,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:50:01,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 10:50:01,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:01,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:01,151 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:01,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 10:50:01,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:50:01,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:50:01,190 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:50:01,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:01,198 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:50:01,198 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:50:01,198 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:50:01,198 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:50:01,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:50:01,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:50:01,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:50:01,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2022-11-20 10:50:01,199 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:50:01,199 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:50:01,200 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,206 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,209 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:50:01,296 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:50:01,296 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:50:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:01,297 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:01,303 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 [2022-11-20 10:50:01,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 10:50:01,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:50:01,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:50:01,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:50:01,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:50:01,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:50:01,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:50:01,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:50:01,330 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:50:01,347 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 10:50:01,347 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:50:01,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:50:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:01,351 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:01,354 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:50:01,355 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:50:01,355 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:50:01,355 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0#1) = 1*ULTIMATE.start_main_~s__state~0#1 Supporting invariants [] [2022-11-20 10:50:01,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 10:50:01,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:01,363 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:50:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:50:01,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:01,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:01,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:01,452 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 [2022-11-20 10:50:01,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:01,483 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2022-11-20 10:50:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:50:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-11-20 10:50:01,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2022-11-20 10:50:01,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:01,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2022-11-20 10:50:01,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:01,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2022-11-20 10:50:01,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:50:01,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2022-11-20 10:50:01,488 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2022-11-20 10:50:01,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2022-11-20 10:50:01,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-11-20 10:50:01,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-20 10:50:01,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2022-11-20 10:50:01,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:01,490 INFO L218 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-11-20 10:50:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2022-11-20 10:50:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-20 10:50:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2022-11-20 10:50:01,493 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-11-20 10:50:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:01,495 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:01,509 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2022-11-20 10:50:01,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2022-11-20 10:50:01,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-11-20 10:50:01,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2022-11-20 10:50:01,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-11-20 10:50:01,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-20 10:50:01,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2022-11-20 10:50:01,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:50:01,511 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-20 10:50:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2022-11-20 10:50:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 10:50:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-20 10:50:01,513 INFO L240 hiAutomatonCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-20 10:50:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:01,514 INFO L428 stractBuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-20 10:50:01,515 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-20 10:50:01,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2022-11-20 10:50:01,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2022-11-20 10:50:01,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:50:01,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:50:01,516 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:01,516 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:01,516 INFO L748 eck$LassoCheckResult]: Stem: 3239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); 3240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_~s__state~0#1, main_~s__hit~0#1, main_~blastFlag~0#1, main_~tmp___1~0#1;havoc main_~s__state~0#1;main_~s__hit~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~blastFlag~0#1;havoc main_~tmp___1~0#1;main_~s__state~0#1 := 8466;main_~blastFlag~0#1 := 0; 3243#L111 assume !false; 3235#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3236#L36 assume 8466 == main_~s__state~0#1; 3260#L37 assume 0 == main_~blastFlag~0#1;main_~blastFlag~0#1 := 2; 3261#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3267#L111 assume !false; 3245#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3289#L36 assume !(8466 == main_~s__state~0#1); 3284#L41 assume 8512 == main_~s__state~0#1; 3258#L42 [2022-11-20 10:50:01,517 INFO L750 eck$LassoCheckResult]: Loop: 3258#L42 main_~tmp___1~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3250#L81 assume 0 != main_~tmp___1~0#1;main_~s__state~0#1 := 8466; 3251#L111 assume !false; 3293#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3292#L36 assume 8466 == main_~s__state~0#1; 3287#L37 assume !(0 == main_~blastFlag~0#1); 3291#L69-1 assume !(0 != main_~s__hit~0#1);main_~s__state~0#1 := 8512; 3290#L111 assume !false; 3288#L30 assume !(main_~s__state~0#1 <= 8512 && main_~blastFlag~0#1 > 2); 3286#L36 assume !(8466 == main_~s__state~0#1); 3285#L41 assume 8512 == main_~s__state~0#1; 3258#L42 [2022-11-20 10:50:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2022-11-20 10:50:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:01,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776231632] [2022-11-20 10:50:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:01,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2022-11-20 10:50:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791088410] [2022-11-20 10:50:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2022-11-20 10:50:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979708675] [2022-11-20 10:50:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:01,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:50:01 BoogieIcfgContainer [2022-11-20 10:50:01,888 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:50:01,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:50:01,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:50:01,889 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:50:01,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:56" (3/4) ... [2022-11-20 10:50:01,892 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-20 10:50:01,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:50:01,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:50:01,947 INFO L158 Benchmark]: Toolchain (without parser) took 5953.68ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 91.0MB in the beginning and 65.0MB in the end (delta: 26.0MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,947 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:01,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.22ms. Allocated memory is still 121.6MB. Free memory was 90.5MB in the beginning and 80.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.52ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,948 INFO L158 Benchmark]: Boogie Preprocessor took 35.09ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 77.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:01,948 INFO L158 Benchmark]: RCFGBuilder took 367.12ms. Allocated memory is still 121.6MB. Free memory was 77.4MB in the beginning and 67.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,948 INFO L158 Benchmark]: BuchiAutomizer took 5205.87ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 66.8MB in the beginning and 67.1MB in the end (delta: -218.7kB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,949 INFO L158 Benchmark]: Witness Printer took 57.37ms. Allocated memory is still 167.8MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:01,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.22ms. Allocated memory is still 121.6MB. Free memory was 90.5MB in the beginning and 80.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.52ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.09ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 77.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 367.12ms. Allocated memory is still 121.6MB. Free memory was 77.4MB in the beginning and 67.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 5205.87ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 66.8MB in the beginning and 67.1MB in the end (delta: -218.7kB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Witness Printer took 57.37ms. Allocated memory is still 167.8MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 548 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 352 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf91 smp100 dnf180 smp78 tf112 neg93 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 VAL [blastFlag=0, s__state=8466] [L29] COND TRUE 1 VAL [blastFlag=0, s__state=8466] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=0, s__state=8466] [L36] COND TRUE s__state == 8466 VAL [blastFlag=0, s__state=8466] [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 VAL [blastFlag=2, s__state=8466] [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] [L29] COND TRUE 1 VAL [blastFlag=2, s__hit=0, s__state=8512] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=2, s__hit=0, s__state=8512] [L36] COND FALSE !(s__state == 8466) VAL [blastFlag=2, s__hit=0, s__state=8512] [L41] COND TRUE s__state == 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L21] int s__state ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int blastFlag ; [L24] int tmp___1; [L26] s__state = 8466 [L27] blastFlag = 0 VAL [blastFlag=0, s__state=8466] [L29] COND TRUE 1 VAL [blastFlag=0, s__state=8466] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=0, s__state=8466] [L36] COND TRUE s__state == 8466 VAL [blastFlag=0, s__state=8466] [L69] COND TRUE blastFlag == 0 [L70] blastFlag = 2 VAL [blastFlag=2, s__state=8466] [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] [L29] COND TRUE 1 VAL [blastFlag=2, s__hit=0, s__state=8512] [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) VAL [blastFlag=2, s__hit=0, s__state=8512] [L36] COND FALSE !(s__state == 8466) VAL [blastFlag=2, s__hit=0, s__state=8512] [L41] COND TRUE s__state == 8512 VAL [blastFlag=2, s__hit=0, s__state=8512] Loop: [L80] tmp___1 = __VERIFIER_nondet_int() [L81] COND TRUE \read(tmp___1) [L82] s__state = 8466 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND TRUE s__state == 8466 [L69] COND FALSE !(blastFlag == 0) [L72] COND FALSE !(\read(s__hit)) [L75] s__state = 8512 [L29] COND TRUE 1 [L30] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L36] COND FALSE !(s__state == 8466) [L41] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-20 10:50:01,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:02,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3aaa105-4eb9-4c39-a84f-240c0b989c5a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)